The 5th PG challenge for 2024 PrimeGrid's 19th Birthday Challenge.  6/12/24 to 6/19/24 19:00 UTC 7 days.  GFN-19 is the subproject. 
 
The challenge page is here: https://www.primegrid.com/forum_thread.php?id=10568
 
From their webpage:
To participate in the challenge:
 

• Wait until the challenge timeframe starts (or set your BOINC Client download schedule accordingly), as tasks issued before the challenge will not count.
• In your PrimeGrid preferences section, select only the GFN-19 project.

Important reminders:
 

• Note on GFN tasks: GFN has eliminated the need for a full doublecheck task on each workunit, but has replaced it with a short verification task. Expect to receive a few tasks about 1% of normal length.
• The typical deadline for some of these WUs is longer than the challenge time-frame, so make sure your computer is able to return the WUs within 7 days. Only tasks issued AFTER the start time and returned BEFORE the finish time will be counted.
• At the Conclusion of the Challenge: We kindly ask users "moving on" to ABORT their tasks instead of DETACHING, RESETTING, or PAUSING. ABORTING tasks allows them to be recycled immediately; thus a much faster "clean up" to the end of a Challenge. DETACHING, RESETTING, and PAUSING tasks causes them to remain in limbo until they EXPIRE. Therefore, we must wait until tasks expire to send them out to be completed. Please consider either completing what's in the queue or ABORTING them. Thanks!

All set here. too.
Happy birthday, PrimeGrid!

Congrats to the lucky person who found a prime.
From the challenge thread:
 
The challenge has ended with a prime discovered! Stay tuned.

Final update, before I start updating cleanup.

Challenge: PrimeGrid's 19th Birthday
App: 27 (GFN-19)
Fast DC tasks are NOT included.
(As of 2024-06-20 13:31:24 UTC)

296534 tasks have been sent out. [CPU/GPU/anonymous_platform: 93607 (32%) / 202922 (68%) / 5 (0%)]

Of those tasks that have been sent out:

38472 (13%) were aborted. [26836 (9%) / 11636 (4%) / 0 (0%)]
7622 (3%) came back with some kind of an error. [1811 (1%) / 5811 (2%) / 0 (0%)]
228933 (77%) have returned a successful result. [53576 (18%) / 175353 (59%) / 4 (0%)]
13942 (5%) are still in progress. [7436 (3%) / 6506 (2%) / 0 (0%)]

Of the tasks that have been returned successfully:

1258 (1%) are pending validation. [252 (0%) / 1006 (0%) / 0 (0%)]
227675 (99%) have been successfully validated. [53324 (23%) / 174347 (76%) / 4 (0%)]
17 (0%) were invalid. [5 (0%) / 12 (0%) / 0 (0%)]
0 (0%) are inconclusive. [0 (0%) / 0 (0%) / 0 (0%)]

The current leading edge (i.e., latest work unit for which work has actually been sent out to a host) is b=11055750. The leading edge was at b=9425338 at the beginning of the challenge. Since the challenge started, the leading edge has advanced 17.30% as much as it had prior to the challenge!

At the Conclusion of the Challenge

When the challenge completes, we would prefer users "moving on" to finish those tasks they have downloaded, if not then please ABORT the WU's (and then UPDATE the PrimeGrid project) instead of DETACHING, RESETTING, or PAUSING.

ABORTING WU's allows them to be recycled immediately; thus a much faster "clean up" to the end of a Challenge. DETACHING, RESETTING, and PAUSING WU's causes them to remain in limbo until they EXPIRE. Therefore, we must wait until WU's expire to send them out to be completed.

Likewise, if you're shutting down the computer for an extended period of time, or deleting the VM (Virtual Machine), please ABORT all remaining tasks first. Also, be aware that merely shutting off a cloud server doesn't stop the billing. You have to destroy/delete the server if you don't want to continue to be charged for it.

Thank you!