24 May
2004
24 May
'04
12:07 p.m.
Somewhat to my surprise, I seem to have been the discoverer since 1983 of the largest known composite M(p), namely M(M(31)). Ah yes, it's divisible by 295257526626031.
Amazing what you could do with an evening's mainframe idle time and a short program in bc. Today's tools are better: 72280004994623 | M(M(31)+12) 160610305399471 | M(M(31)+46) 536024835641863 | M(M(31)+130) 1717987026401 | M(M(31)+136) 1481763882031 | M(M(31)+240) I don't think the new records will stand long: none of those factorizations took an entire second. -- Don Reble djr@nk.ca