Thread: Big factors
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Old 2013-04-03, 01:23   #2
Batalov
 
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Mar 2008
Phi(4,2^7658614+1)/2

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worktodo.txt:
Pminus1=1,2,8232929,1,10000,0,"3"
=>

Code:
P-1 found a factor in stage #1, B1=10000.
2^8232929+1 has a factor: 997183410304432117267065463213026379715216410911450070172292068758243
[That's 229.2 bits]

(Of course, I cheated in Pari first, by finding a few 2^p+1 that have at least five small factors. This one has two more slightly larger. Seven altogether.)
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