Hmmm, ball park how long do they take to finish?? 20hrs I think I saw somewhere, does that sound right??

Thanks Bill, Might throw some cores into the mix, as I am just using GPU at the moment.
All my cores are crunching WCG at the moment..

Same problem here, heat. All these GPU's and CPU's and I am up to 28'c now....and that is with 8'c air forced into my workroom.
Thanks for the Info, still on the fence about taking cores from WCG, but at PG it might mean 2nd spot for us If we can keep our output as it is or even higher..
We a slowly slipping down the leader board at WCG...
 
Where do we prioritize our effort??

Below are my current stats.  I'm not sure where I was when I started (1100'ish tasks).  Below is the mix of 20,21, and 22 length numbers.  Is about the same ratio everyone gets?  I'm guessing based on the odds, I should get a 23 sometime.
 
Completed tasks - 1315
Credit - 5,316,545.00
Found of length 20 - 110
Found of length 21 - 26
Found of length 22 - 7

HK-Steve
Got my first AP23 today, very cool....

Mind sharing your totals for the other sizes?  I'm curious about ratios...

I've been doing:
primgrid.com/home.php
Select Your Account on the left.
Scroll down to Active projects and the first one listed for me is AP26 tasks with the stats.

Something does not seem right...
 
I have never done AP27 before.....so maybe it is correct??

edited, to save space.
 
Nothing to see here, move on..

Well, it worked when I clicked the view detailed statistics link as opposed to typing it in directly (maybe it doesn't realized I'm logged in).  Thanks.

List of arithmetic progressions

Found by you:

AP22: 277244543103675281+3728817*23#*n for n=0..21 (2016-09-29 09:19:49 UTC)
AP22: 244459320107032367+9564816*23#*n for n=0..21 (2016-11-18 12:46:40 UTC)
AP22: 198951598834797527+9847858*23#*n for n=0..21 (2016-11-18 19:40:44 UTC)
AP22: 208645895370042833+3722342*23#*n for n=0..21 (2016-09-29 08:55:45 UTC)
AP22: 188480893163150899+6946811*23#*n for n=0..21 (2016-10-27 04:26:00 UTC)
AP22: 166500851327757799+3093029*23#*n for n=0..21 (2016-09-25 08:04:23 UTC)
AP22: 130857187072546313+4744047*23#*n for n=0..21 (2016-10-07 21:35:34 UTC)
AP21: 307002872253946823+9640007*23#*n for n=0..20 (2016-11-18 16:49:18 UTC)
AP21: 333348925052086679+3127680*23#*n for n=0..20 (2016-09-25 13:07:27 UTC)
AP21: 329167939873945541+3360223*23#*n for n=0..20 (2016-09-26 20:41:09 UTC)
AP21: 285972058587135139+9077997*23#*n for n=0..20 (2016-11-14 19:54:07 UTC)
AP21: 289705724601948427+6927359*23#*n for n=0..20 (2016-10-26 23:28:04 UTC)
AP21: 293189349168665189+4450105*23#*n for n=0..20 (2016-10-05 16:29:19 UTC)
AP21: 291290267004503581+2962519*23#*n for n=0..20 (2016-09-24 09:46:08 UTC)
AP21: 259175543723307077+9649681*23#*n for n=0..20 (2016-11-18 15:57:04 UTC)
AP21: 226185318367245947+9081684*23#*n for n=0..20 (2016-11-14 20:42:20 UTC)
AP21: 248955373346099759+2946408*23#*n for n=0..20 (2016-09-24 06:48:59 UTC)
AP21: 228527244581580149+7207991*23#*n for n=0..20 (2016-10-29 22:19:25 UTC)
AP21: 237703776765770041+4900782*23#*n for n=0..20 (2016-10-09 07:41:24 UTC)
AP21: 243888841653218527+2917569*23#*n for n=0..20 (2016-09-24 02:11:16 UTC)
AP21: 192130745727809813+9107212*23#*n for n=0..20 (2016-11-15 01:09:33 UTC)
AP21: 212423150886277999+3793272*23#*n for n=0..20 (2016-09-29 20:41:05 UTC)
AP21: 182614055993671769+3930472*23#*n for n=0..20 (2016-09-30 22:18:01 UTC)
AP21: 155731866757411303+7093739*23#*n for n=0..20 (2016-10-28 17:24:07 UTC)
AP21: 161160857061892403+5037553*23#*n for n=0..20 (2016-10-10 09:55:01 UTC)
AP21: 157397916445757509+4995787*23#*n for n=0..20 (2016-10-10 01:35:44 UTC)
AP21: 132618284228391217+9735117*23#*n for n=0..20 (2016-11-18 06:12:36 UTC)
AP21: 136520972232431723+4483433*23#*n for n=0..20 (2016-10-05 21:01:16 UTC)
AP21: 121106681094389953+3460110*23#*n for n=0..20 (2016-09-27 13:30:55 UTC)
AP21: 111242516353015819+4957328*23#*n for n=0..20 (2016-10-09 17:40:51 UTC)
AP21: 101773266313398737+4470249*23#*n for n=0..20 (2016-10-05 19:22:23 UTC)
AP21: 84715053985679879+7036593*23#*n for n=0..20 (2016-10-28 03:03:56 UTC)
AP21: 86156811093372337+3458026*23#*n for n=0..20 (2016-09-27 13:05:50 UTC)
AP20: 333141219152500901+5011757*23#*n for n=0..19 (2016-10-10 04:55:21 UTC)
AP20: 324331072940074729+6931616*23#*n for n=0..19 (2016-10-27 00:21:40 UTC)
AP20: 300248907654493261+10582438*23#*n for n=0..19 (2016-11-19 13:33:48 UTC)
AP20: 315738741019343441+6850929*23#*n for n=0..19 (2016-10-26 02:15:23 UTC)
AP20: 299964034774690921+10558657*23#*n for n=0..19 (2016-11-19 12:27:22 UTC)
AP20: 295724785657481743+10396172*23#*n for n=0..19 (2016-11-19 08:26:36 UTC)
AP20: 309077367505790089+7014363*23#*n for n=0..19 (2016-10-27 21:54:04 UTC)
AP20: 317660692716591617+3862748*23#*n for n=0..19 (2016-09-30 10:34:04 UTC)
AP20: 284860920230605723+10271964*23#*n for n=0..19 (2016-11-19 04:51:12 UTC)
AP20: 293423400671117341+6932143*23#*n for n=0..19 (2016-10-27 01:01:29 UTC)
AP20: 304779663731099653+3974477*23#*n for n=0..19 (2016-10-01 08:01:55 UTC)
AP20: 273785942416348697+10256648*23#*n for n=0..19 (2016-11-19 04:24:10 UTC)
AP20: 295497838722073223+4969053*23#*n for n=0..19 (2016-10-09 19:45:59 UTC)
AP20: 296047514761527097+4837556*23#*n for n=0..19 (2016-10-08 17:56:58 UTC)
AP20: 295951519185407843+3974471*23#*n for n=0..19 (2016-10-01 08:01:55 UTC)
AP20: 274191319597997363+9087689*23#*n for n=0..19 (2016-11-14 22:17:55 UTC)
AP20: 290705432151721577+3179026*23#*n for n=0..19 (2016-09-25 18:36:08 UTC)
AP20: 289304761571953961+3294405*23#*n for n=0..19 (2016-09-26 10:09:50 UTC)
AP20: 281965769337932177+4948001*23#*n for n=0..19 (2016-10-09 16:51:02 UTC)
AP20: 269104362858176033+6913732*23#*n for n=0..19 (2016-10-26 19:30:00 UTC)
AP20: 268584725715684283+6941038*23#*n for n=0..19 (2016-10-27 03:34:51 UTC)
AP20: 250317071803316123+10052003*23#*n for n=0..19 (2016-11-18 23:14:56 UTC)
AP20: 257668447698639209+7090418*23#*n for n=0..19 (2016-10-28 16:29:56 UTC)
AP20: 247119277727424253+9576775*23#*n for n=0..19 (2016-11-18 13:32:36 UTC)
AP20: 266501474162305651+3970154*23#*n for n=0..19 (2016-10-01 05:55:01 UTC)
AP20: 266741049769684319+3751871*23#*n for n=0..19 (2016-09-29 13:06:48 UTC)
AP20: 260986212703751897+3702682*23#*n for n=0..19 (2016-09-29 05:57:44 UTC)
AP20: 243619670297194703+6940290*23#*n for n=0..19 (2016-10-27 02:35:29 UTC)
AP20: 249043536379923223+4882987*23#*n for n=0..19 (2016-10-09 04:21:09 UTC)
AP20: 255261270698095507+3140592*23#*n for n=0..19 (2016-09-25 14:23:35 UTC)
AP20: 253091613570593801+3601644*23#*n for n=0..19 (2016-09-28 12:41:21 UTC)
AP20: 252340555706945183+3776749*23#*n for n=0..19 (2016-09-29 17:44:48 UTC)
AP20: 238129427121670649+6927030*23#*n for n=0..19 (2016-10-26 23:01:19 UTC)
AP20: 247803533943156361+4465599*23#*n for n=0..19 (2016-10-05 18:32:58 UTC)
AP20: 234474791305229539+7055704*23#*n for n=0..19 (2016-10-28 09:23:44 UTC)
AP20: 224427988564460803+9080887*23#*n for n=0..19 (2016-11-14 20:55:16 UTC)
AP20: 222542333471140811+9097419*23#*n for n=0..19 (2016-11-14 23:32:49 UTC)
AP20: 228605777432191811+4956823*23#*n for n=0..19 (2016-10-09 20:35:53 UTC)
AP20: 232707598684039201+3486370*23#*n for n=0..19 (2016-09-27 18:18:58 UTC)
AP20: 212570261972909111+6906969*23#*n for n=0..19 (2016-10-26 17:40:19 UTC)
AP20: 227846033318671283+3283356*23#*n for n=0..19 (2016-09-26 08:28:39 UTC)
AP20: 218779098686132167+3552453*23#*n for n=0..19 (2016-09-28 04:15:42 UTC)
AP20: 213257516679022367+4779516*23#*n for n=0..19 (2016-10-08 06:32:10 UTC)
AP20: 203796738387898517+6940945*23#*n for n=0..19 (2016-10-27 03:34:51 UTC)
AP20: 199649323539656567+6970562*23#*n for n=0..19 (2016-10-27 10:23:52 UTC)
AP20: 198156255444648539+7199844*23#*n for n=0..19 (2016-10-29 19:50:32 UTC)
AP20: 207489846057517987+3957107*23#*n for n=0..19 (2016-10-01 03:28:28 UTC)
AP20: 193569943368436057+7090375*23#*n for n=0..19 (2016-10-28 16:29:56 UTC)
AP20: 193608057418888327+4882993*23#*n for n=0..19 (2016-10-09 04:21:09 UTC)
AP20: 192765473383950067+4618898*23#*n for n=0..19 (2016-10-07 02:12:30 UTC)
AP20: 194321720549170367+3974427*23#*n for n=0..19 (2016-10-01 08:01:55 UTC)
AP20: 189506982461787797+4698023*23#*n for n=0..19 (2016-10-07 14:30:56 UTC)
AP20: 179353494271429249+6910145*23#*n for n=0..19 (2016-10-26 18:33:42 UTC)
AP20: 186426196590760097+4779496*23#*n for n=0..19 (2016-10-08 06:32:10 UTC)
AP20: 159400745942423317+9829301*23#*n for n=0..19 (2016-11-18 11:38:02 UTC)
AP20: 154025900809777343+10552625*23#*n for n=0..19 (2016-11-19 12:11:24 UTC)
AP20: 181305144082902067+3836406*23#*n for n=0..19 (2016-09-30 05:02:16 UTC)
AP20: 155582490794744401+9728260*23#*n for n=0..19 (2016-11-18 05:46:48 UTC)
AP20: 167249691907212613+6939299*23#*n for n=0..19 (2016-10-27 02:18:23 UTC)
AP20: 173454877639792367+4659726*23#*n for n=0..19 (2016-10-07 05:05:57 UTC)
AP20: 174582979300388063+3778904*23#*n for n=0..19 (2016-09-29 18:09:55 UTC)
AP20: 175114689620345569+3591528*23#*n for n=0..19 (2016-09-28 11:00:38 UTC)
AP20: 166292824207250789+4945372*23#*n for n=0..19 (2016-10-09 15:36:14 UTC)
AP20: 149145044500677307+7084756*23#*n for n=0..19 (2016-10-28 15:09:29 UTC)
AP20: 136449775767177181+9724101*23#*n for n=0..19 (2016-11-18 05:21:33 UTC)
AP20: 134496296913830387+9745870*23#*n for n=0..19 (2016-11-18 07:09:55 UTC)
AP20: 155205358751625997+4483390*23#*n for n=0..19 (2016-10-05 21:01:16 UTC)
AP20: 154978976372452747+3741929*23#*n for n=0..19 (2016-09-29 11:50:48 UTC)
AP20: 150806596429035329+4486823*23#*n for n=0..19 (2016-10-05 21:25:57 UTC)
AP20: 126231568689473839+10008060*23#*n for n=0..19 (2016-11-18 22:03:12 UTC)
AP20: 144677903768879731+5006298*23#*n for n=0..19 (2016-10-10 03:40:14 UTC)
AP20: 145396357030662839+4747004*23#*n for n=0..19 (2016-10-07 22:00:21 UTC)
AP20: 150246065405515771+3474967*23#*n for n=0..19 (2016-09-27 16:02:36 UTC)
AP20: 149452586195679293+3658738*23#*n for n=0..19 (2016-09-28 21:32:23 UTC)
AP20: 126020300965637263+9127491*23#*n for n=0..19 (2016-11-15 04:47:06 UTC)
AP20: 120452772347965093+10372758*23#*n for n=0..19 (2016-11-19 07:38:42 UTC)
AP20: 119461755902534137+9123505*23#*n for n=0..19 (2016-11-15 03:59:54 UTC)
AP20: 141219950282422961+3727590*23#*n for n=0..19 (2016-09-29 10:18:33 UTC)
AP20: 110732465992869323+10553946*23#*n for n=0..19 (2016-11-19 12:01:57 UTC)
AP20: 114508485089261849+9090067*23#*n for n=0..19 (2016-11-14 21:59:37 UTC)
AP20: 134901447845971297+3445885*23#*n for n=0..19 (2016-09-27 11:24:41 UTC)
AP20: 105549450904547491+10229665*23#*n for n=0..19 (2016-11-19 04:03:23 UTC)
AP20: 135341791332728021+3029057*23#*n for n=0..19 (2016-09-24 20:42:24 UTC)
AP20: 118007852396486711+6979491*23#*n for n=0..19 (2016-10-27 13:43:22 UTC)
AP20: 126735601295318363+4742600*23#*n for n=0..19 (2016-10-07 21:10:54 UTC)
AP20: 125056736306365489+4871035*23#*n for n=0..19 (2016-10-09 01:26:10 UTC)
AP20: 131174549048547997+3352339*23#*n for n=0..19 (2016-09-26 19:25:21 UTC)
AP20: 113331697731905141+7212238*23#*n for n=0..19 (2016-10-29 22:22:33 UTC)
AP20: 112916822839512949+6955002*23#*n for n=0..19 (2016-10-27 06:07:56 UTC)
AP20: 118807229990234911+4741224*23#*n for n=0..19 (2016-10-07 23:39:12 UTC)
AP20: 97339366225994591+9745908*23#*n for n=0..19 (2016-11-18 07:09:55 UTC)
AP20: 97117913861274991+9762579*23#*n for n=0..19 (2016-11-18 07:55:56 UTC)
AP20: 123823184103895711+3262654*23#*n for n=0..19 (2016-09-26 05:57:53 UTC)
AP20: 93816041580532949+9811197*23#*n for n=0..19 (2016-11-18 10:45:26 UTC)
AP20: 112781150894610553+4806133*23#*n for n=0..19 (2016-10-08 12:08:14 UTC)
AP20: 118020547432682171+3044259*23#*n for n=0..19 (2016-09-24 23:13:39 UTC)
AP20: 116487895269631399+3251354*23#*n for n=0..19 (2016-09-26 05:59:42 UTC)
AP20: 98696848091622797+6955045*23#*n for n=0..19 (2016-10-27 06:07:56 UTC)
AP20: 112424653822354661+3309656*23#*n for n=0..19 (2016-09-26 13:06:40 UTC)
AP20: 105318261887324599+4723238*23#*n for n=0..19 (2016-10-07 18:42:15 UTC)
AP20: 109001810839830487+3809564*23#*n for n=0..19 (2016-09-29 23:12:38 UTC)
AP20: 105374634148226231+4493323*23#*n for n=0..19 (2016-10-05 22:40:00 UTC)
AP20: 103353974510515181+4486778*23#*n for n=0..19 (2016-10-05 21:25:57 UTC)
AP20: 99739297279817521+4996844*23#*n for n=0..19 (2016-10-10 02:00:26 UTC)
AP20: 94434146157015409+5053973*23#*n for n=0..19 (2016-10-10 13:14:54 UTC)
AP20: 100386188436512249+3408105*23#*n for n=0..19 (2016-09-27 05:06:32 UTC)
AP20: 96345591876307981+3636539*23#*n for n=0..19 (2016-09-28 18:10:16 UTC)
AP20: 87636254494276121+4717496*23#*n for n=0..19 (2016-10-07 17:28:09 UTC)
AP20: 88858012980403297+3677431*23#*n for n=0..19 (2016-09-29 00:29:24 UTC)
AP20: 84520942485363407+3263347*23#*n for n=0..19 (2016-09-26 05:32:25 UTC)

Double checked by you:

AP21: 276581266991940137+3870742*23#*n for n=0..20 (2016-09-30 11:20:33 UTC)
AP21: 113626975239444521+10111248*23#*n for n=0..20 (2016-11-19 00:04:22 UTC)
AP21: 82156441244751889+4839205*23#*n for n=0..20 (2016-10-08 17:59:25 UTC)
AP20: 297700093698326411+3870787*23#*n for n=0..19 (2016-09-30 11:20:33 UTC)
AP20: 300205949198329627+3166835*23#*n for n=0..19 (2016-09-25 17:38:13 UTC)
AP20: 290339350874145647+3799886*23#*n for n=0..19 (2016-09-29 21:48:45 UTC)
AP20: 284856542255751751+5038863*23#*n for n=0..19 (2016-10-10 10:18:39 UTC)
AP20: 287109732049465903+4464505*23#*n for n=0..19 (2016-10-05 18:23:59 UTC)
AP20: 267880438023472961+6863797*23#*n for n=0..19 (2016-10-26 06:42:16 UTC)
AP20: 253352869473025603+10258727*23#*n for n=0..19 (2016-11-19 04:17:38 UTC)
AP20: 276889128554300161+4024189*23#*n for n=0..19 (2016-10-01 15:27:34 UTC)
AP20: 255243847089227419+6922006*23#*n for n=0..19 (2016-10-26 21:22:45 UTC)
AP20: 248431320635025659+6858260*23#*n for n=0..19 (2016-10-26 04:31:09 UTC)
AP20: 234257740909465837+9788845*23#*n for n=0..19 (2016-11-18 18:43:06 UTC)
AP20: 263383045363396337+2197571*23#*n for n=0..19 (2016-09-17 18:04:04 UTC)
AP20: 234160022611885871+7108318*23#*n for n=0..19 (2016-10-28 20:41:24 UTC)
AP20: 237816215781350653+3660893*23#*n for n=0..19 (2016-09-28 21:48:25 UTC)
AP20: 215791908431851121+7039622*23#*n for n=0..19 (2016-10-28 04:13:43 UTC)
AP20: 206960157272878201+7108239*23#*n for n=0..19 (2016-10-28 20:41:24 UTC)
AP20: 221081910998651063+3234227*23#*n for n=0..19 (2016-09-26 00:57:22 UTC)
AP20: 220450134926842391+3234115*23#*n for n=0..19 (2016-09-26 00:57:22 UTC)
AP20: 211192838908078681+3030968*23#*n for n=0..19 (2016-09-24 20:48:09 UTC)
AP20: 202998147782197931+3005239*23#*n for n=0..19 (2016-09-24 17:22:42 UTC)
AP20: 191955554097224069+4827084*23#*n for n=0..19 (2016-10-08 15:27:04 UTC)
AP20: 187593329200049467+4759289*23#*n for n=0..19 (2016-10-08 01:08:42 UTC)
AP20: 152427193879358731+9701580*23#*n for n=0..19 (2016-11-18 06:16:27 UTC)
AP20: 141551627137923199+9618625*23#*n for n=0..19 (2016-11-18 00:15:25 UTC)
AP20: 157149813855882359+3096711*23#*n for n=0..19 (2016-09-25 08:06:20 UTC)
AP20: 147896120085233167+4939613*23#*n for n=0..19 (2016-10-09 17:11:32 UTC)
AP20: 125317493925925799+9562964*23#*n for n=0..19 (2016-11-17 22:53:16 UTC)
AP20: 120176077781048467+10415713*23#*n for n=0..19 (2016-11-19 08:28:02 UTC)
AP20: 139953840138042547+4070240*23#*n for n=0..19 (2016-10-02 03:25:52 UTC)
AP20: 131351349651515743+3583870*23#*n for n=0..19 (2016-09-28 09:04:02 UTC)
AP20: 129207551037262513+3680540*23#*n for n=0..19 (2016-09-29 00:47:06 UTC)
AP20: 99459265187287781+10415767*23#*n for n=0..19 (2016-11-19 08:28:02 UTC)
AP20: 103639665687109289+9346001*23#*n for n=0..19 (2016-11-16 14:02:32 UTC)
AP20: 117617486875696151+4839258*23#*n for n=0..19 (2016-10-08 17:59:25 UTC)
AP20: 116096819077818833+3917374*23#*n for n=0..19 (2016-09-30 20:53:57 UTC)
AP20: 112920728007902209+3096758*23#*n for n=0..19 (2016-09-25 08:06:20 UTC)
AP20: 110705563804338241+3213759*23#*n for n=0..19 (2016-09-25 22:07:22 UTC)

AM Pie Time
 

Click Image for a Larger View.

HK-Steve
We are all still learning, as we should everyday..

You mean this Link? http://www.primegrid.com/ap.php
 

Returning Participants

Your account
Then look down under Active Projects  AP26 tasks (view detailed statistics) Click on that link.

HK-Steve
Bill, I am logged in, but that is what I see on the page you posted the link to...
Sorry for taking up so much space, I am a little fish in the big ocean...

Sorry forgot you are somewhat new to this
It looks like you can only see your own Founds, on your Your account Down under Active Projects do you show that you have any Primes?
Or Click the number even if 0 next to Primes found and you will see all of your Primes.
http://www.primegrid.com/primes/?section=primelist&userid=273570 or take my ID 273570 away and put yours to see your Primes.
 
Myself I have 9 & 7 I have 5 Primes and 11 Doublecheckers

bcavnaugh

I'm jealous of your 23... :)

Nice to see a GPU focused challenge where we can shine!  Great job guys, it is a close race for the podium.
 
I'm lucky it cooled down here finally because I'm on full power with WCG + PG events...only apartment around with the window wide open for cooling!

bcavnaugh
I thought all of yours were 23
AP20: 120452772347965093+10372758*23#*n for n=0..19 (2016-11-19 07:38:42 UTC)

I wish.  I think it's the n=0..19 that makes it a 20.
Below is a 22, notice the n=0..21.
AP22: 277244543103675281+3728817*23#*n for n=0..21 (2016-09-29 09:19:49 UTC)
 
I think that means this one formula yields 22 prime numbers.  Every n 0 through 21 will yield a prime number.
277244543103675281+3728817*23#*0 - is prime
277244543103675281+3728817*23#*1 - is prime
277244543103675281+3728817*23#*2 - is prime
...
277244543103675281+3728817*23#*21 - is prime
 
That is why it is so much harder to find an AP23, AP24, etc.   The whole series has to be true.  I may have read the math wrong though...
Edit: thinking about this, it must be more complicated, because it appears way to easy to get an even number using my logic.  Oh well, way to early for this thinking...
Edit 2: Couldn't stop researching...

Arithmetic progressions
In mathematics, an arithmetic progression (AP) or arithmetic sequence is a sequence of numbers such that the difference between the consecutive terms is constant. For instance, the sequence 5, 7, 9, 11, 13, 15 … is an arithmetic progression with common difference of 2.

An arithmetic progression of primes is a sequence of primes with a common difference between any two successive numbers in the sequence. For example 3, 7, 11 is an arithmetic progression of 3 primes with a common difference of 4.

For an arithmetic progression (AP) of primes, AP-k is k primes of the form p + d*n for some d (the common difference between the primes) and k consecutive values of n. The above AP-3 is 3 + 4*n for n=0,1,2.