Marin Mersenne 2^P-1
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GIMPS
Finding World Record Primes Since 1996

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MnStatusDetails
161525867Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
48138219284375571759772272.02019-06-13 04:01:06
History
DateUserTypeResult
2019-06-13Samuel SchmidtF
Factor: 4813821928437557175977 / TF: 72-73
2018-12-26ZenghuiNF
no factor from 2^71 to 2^72
2018-06-26ZenghuiNF
no factor from 2^70 to 2^71
2018-06-06proxy2222NF
no factor from 2^69 to 2^70
2017-03-27XolotlNF
no factor from 2^68 to 2^69
2016-03-23XZTNF
no factor from 2^67 to 2^68
2015-05-13RichardNF
no factor from 2^66 to 2^67
2013-03-02RichardNF
no factor from 2^65 to 2^66
2011-02-03runeskNF
no factor from 2^64 to 2^65
2010-07-02Chris SmithNF
no factor from 2^63 to 2^64