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
8328577
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 268
TF target 268
Factored
FactorDigitsBitsDate
19225520575271340.8old
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Verified
PRP without proof (not generated)
2018-10-12Chang Chia-Tche87312659D17C4B9D1236055753
Verified
PRP without proof (not generated)
2020-04-20ATH87312659D17C4B9D1667902053
History
DateUserTypeResult
2024-06-10Stef42NF-PM1B1=1375000, B2=2788626750
2020-04-20ATHC-PRPM8328577/1922552057527 : 87312659D17C4B9D
2018-10-12Chang Chia-TcheC-PRPM8328577/1922552057527 : 87312659D17C4B9D