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
181591351Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
67801935877976528827912272.52018-07-20 21:43:18
History
DateUserTypeResult
2018-07-20Andrew GF
Factor: 6780193587797652882791 / TF: 72-73
2018-07-08David HruskaNF
no factor from 2^71 to 2^72
2018-05-14David HruskaNF
no factor from 2^70 to 2^71
2018-04-06ZenghuiNF
no factor from 2^69 to 2^70
2017-06-04tscNF
no factor from 2^68 to 2^69
2016-07-06WileECoyoteNF
no factor from 2^67 to 2^68
2015-07-28vwflat4NF
no factor from 2^66 to 2^67
2013-05-06Ed StrakerNF
no factor from 2^65 to 2^66
2011-03-22Torchwood InstituteNF
no factor from 2^64 to 2^65
2010-07-23Torchwood InstituteNF
no factor from 2^63 to 2^64