User Weber462 found a 72-digit prime factor of an XYYXF number using ECM. This is the
largest ECM factor found this year,
and the 31th largest of all time.Source
From September 7 14:41 to September 12 14:41 PrimeGrid will be running a 5 day challenge on the Sierpinski/Riesel Base 5 project. Note the unusual start and end times!
For more information, please...
SkyHighWeFly, a member of the team Antarctic Crunchers found a megaprime for base S136.
The prime 16165*136^487629+1 has 1.040.380 digits and entered the T5k PrimePages.Source
A new GPU lattice sieve for NFS, cuda-sieve, was recently released. A new app has been added to NFS@Home to test this. Currently, it's only available for nVidia Ampere or higher GPUs running x86_64...
This Wednesday (August 12, 2026) our Internet Service Provider at the Leibniz University Hannover is conducting an extended maintenance of the network infrastructure. Because of this our project...
This Wednesday (August 12, 2026) our Internet Service Provider at the Leibniz University Hannover is conducting an extended maintenance of the network infrastructure. Because of this our project...
From August 12 05:00 to August 15 05:00 PrimeGrid will be running a 3 day challenge on the Proth Prime Search Extended project.
For more information, please see this forum thread.Source
