On 11 December 2016, 20:06:09 UTC, PrimeGrid’s AP27 Search (Arithmetic Progression of 27 primes) found the progression of 26 primes:
142099325379199423+16549135*23#*n for n=0..25
The discovery was made by Koichi Soraku (JG4KEZ(Koichi Soraku)) of Japan using a NVIDIA GTX 1070 on an Intel(R) Core(TM) i7-5775C @ 3.30GHz with 16GB RAM, running Microsoft Windows 10 Professional. This computer took about 27 minutes to process the task (each task tests 100 progression differences of 10 shifts each). Koichi is a member of the BOINC@MIXI team.
The progression was verified on 12 December 2016 10:44:25 UTC, by Dirk Kraemer (DoctorNow) of Germany using an NVIDIA GTX 760 on an AMD Phenom(tm) II X6 CPU running Microsoft Windows Vista. This computer took about 2 hours 22 minutes to process the task. Dirk is a member of the BOINC Confederation.
The AP26 will be listed in Jens Kruse Andersen's Primes in Arithmetic Progression Records page under the section(s):
All known AP24 to AP26
For all APs found 23 and greater, please see PrimeGrid's AP26 Statistics.
For more details, please see the official announcement.