Free-DC
05-12-2010, 12:26 PM
A new record AP25 (Arithmetic Progression of 25 primes) has been found. It is the largest known AP25 and only the 6th discovered. It has an ending term of 139751114244588403 surpassing the previous record of 52115444782777781. It also includes the largest known AP24 with an ending term of 139751114244588403 surpassing the previous record of 108936498476106241. The finder is Rune Nordbøe Skillingstad (runesk (http://www.primegrid.com/show_user.php?userid=51510)) of Norway. He is a member of Team Norway (http://www.primegrid.com/team_display.php?teamid=226). The AP25 progression is written as 12353443596260323+23793841*23#*n for n=0..24. The AP24 progression is written as 12353443596260323+23793841*23#*n for n=1..24. It was found in the AP26 Search by an NVIDIA GeForce GTX 285 on an Intel i7 CPU 940 @ 2.93GHz running 32 bit Windows...the first significant AP found by a GPU!!! For more details on this find and the AP26 search, please see this forum post (http://www.primegrid.com/forum_thread.php?id=1246&nowrap=true#19836).
More... (http://www.primegrid.com/forum_thread.php?id=2506)
More... (http://www.primegrid.com/forum_thread.php?id=2506)