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Old 2007-12-26, 07:26   #1
Kosmaj's Avatar
Nov 2003

2·1,811 Posts

[The following post is about 281*2^628898-1, a prime found by Cruelty in December 2007.]

Cruelty, a nice and important prime because k=281 was the only k<300 with no primes with more than 100k bits!

Next target: 200k bits, there are 4 Ks with no primes larger than 200k bits: k=109, 221, 233, and 283. All reserved by you !! The one with the minmax prime is k=221: n=104846.

Last fiddled with by Kosmaj on 2012-05-05 at 06:16
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