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

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MnStatusDetails
220745633Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
38534931683111039896572271.72015-10-27 11:55:22
History
DateUserTypeResult
2015-10-27demfloroF
Factor: 3853493168311103989657 / TF: 71-72
2015-10-27demfloroNF
no factor from 2^70 to 2^71
2015-10-27demfloroNF
no factor from 2^69 to 2^70
2015-10-27demfloroNF
no factor from 2^68 to 2^69
2015-10-27demfloroNF
no factor from 2^66 to 2^68
2013-08-22Son JohanNF
no factor from 2^65 to 2^66
2011-06-05Charles A. MorrisNF
no factor from 2^64 to 2^65