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
7807421
Composite, with 1 known prime factor. Cofactor is composite.
Trial Factored to 268
TF target 267
Factored
FactorDigitsBitsDate
278310824090171444.7old
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Verified
PRP without proof (not generated)
2018-05-13storm551068640CAFF9EB0CC71423233453
Verified
PRP without proof (not generated)
2019-10-09ATH68640CAFF9EB0CC71339726453
History
DateUserTypeResult
2024-01-30Stef42NF-PM1B1=843000, B2=1382772300
2019-10-09ATHC-PRPM7807421/27831082409017 : 68640CAFF9EB0CC7
2018-05-13storm5510C-PRPM7807421/27831082409017 : 68640CAFF9EB0CC7