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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MnDetails
7861583
Composite, with 2 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 267
Factored
FactorDigitsBitsDate
15723167823.9old
208160740954853257212064.22017-08-03 11:37:20
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Verified
PRP without proof (not generated)
2018-05-24storm5510852DFD0C67E737D92689875753
Verified
PRP without proof (not generated)
2019-10-27GAN852DFD0C67E737D92711410053
History
DateUserTypeResult
2024-01-31Stef42NF-PM1B1=950000, B2=1968826860
2019-10-27GANC-PRPM7861583/15723167/20816074095485325721 : 852DFD0C67E737D9
2018-05-24storm5510C-PRPM7861583/15723167/20816074095485325721 : 852DFD0C67E737D9
2017-08-03TJAOIFFactor: 20816074095485325721