Hi,
A few days ago I submitted to Anthony Forbes a 597-digit 6-tuplet and had it verified as a new world record:
http://anthony.d.forbes.googlepages.com/ktuplets.htmThis number is only a few digits above the previous record, and it should be quite possible for the superblock project to beat it!
The program used was based on the b14 version of dga's xptminer (which was the latest version I was able to compile using Windows and Visual Studio) and ran on 11 cores for about a month before it suddenly surprised me with a find. I'll give some further details later.
The 6-tuplet is
1268360451482944051031693571608646702803337857417059923179003396370803464447945
9213486050679397935104622682138475913438101505200313946821621485384179510473697
9433691754086534863323734928743959323221865529501237655633762351765417920461874
1258860678645822691792395092270199088414732238122470003707838866453023159582123
7351808046531772170786266328462890225388980932631840153394721839158254583153068
7931209705774579874734193952405536748117312631969874545797052973507394025122061
8770487542157843118646752735712130590319004160226700306792249093957168851751545
30232372583285744387264936607664813582967597
+d, d = 0, 4, 6, 10, 12, 16
or
4921035090333221245281056600469203091910280140820896181940314619657756374547612
4680711202733554189605614783506825475691404888752144184576829642013820327715134
5176983584805931408105542588834038851652656017513154942170087395616822290168504
6046380856370538924059371410139041704192384855299316496758299832292941057155474
6087497007967825846220015325654831770578435398632279854720 * 547# + 8061997 +d, d = 0, 4, 6, 10, 12, 16
Regards,
Vidar