Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
262120493Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
786434598916488192492066.12015-12-20 14:17:07
History
DateUserTypeResult
2015-12-20ConductorF
Factor: 78643459891648819249 / TF: 66-67
2013-11-21RichardNF
no factor from 2^65 to 2^66
2011-08-14OS1NF
no factor from 2^64 to 2^65
2010-03-16OS1NF
no factor from 2^63 to 2^64
2010-03-16OS1NF
no factor from 2^62 to 2^63