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
101397853Factored
FactorDigitsBitsDate
21281123510396220311653912580.82020-12-03 21:45:13
P-1 factors
DateFactorB1B2
2020-12-032128112351039622031165391750000750000
History
DateUserTypeResult
2020-12-03ky0urakuF-PM1
Factor: 2128112351039622031165391 / (P-1, B1=750000)
2020-10-05penluNF
no factor from 2^75 to 2^76
2020-10-05penluNF
no factor from 2^74 to 2^75
2020-03-29SRBaseNF
no factor from 2^73 to 2^74
2019-12-05TheGazManNF
no factor from 2^72 to 2^73
2017-09-23el groccoNF
no factor from 2^71 to 2^72
2014-12-08shaugeNF
no factor from 2^70 to 2^71
2014-06-07webbertNF
no factor from 2^69 to 2^70
2014-01-06-Anonymous-NF
no factor from 2^68 to 2^69
2013-10-26-Anonymous-NF
no factor from 2^67 to 2^68
2013-10-25g0bNF
no factor from 2^66 to 2^67
2012-04-15OS1NF
no factor from 2^65 to 2^66
2010-08-13Torchwood InstituteNF
no factor from 2^64 to 2^65
2010-03-011997rj7NF
no factor from 2^63 to 2^64