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

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MnStatusDetails
220744879Composite: 1 known prime factor
Factored
FactorDigitsBitsDate
25896951360875579707372271.12015-10-27 06:55:42
History
DateUserTypeResult
2015-10-27demfloroF
Factor: 2589695136087557970737 / 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