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

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MnDetails
691
Composite, with 4 known prime factors. Cofactor is PRP (Probable-Prime).
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
9066426033131239.7old
104881600323258445212063.2old
28336377244279406644333914972891.2old
166362019444702672671829582072993.7old
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Factored
No proof (small exponent)
2024-09-06George WoltmanPRP_PRP_PRP_PRP_4013
History
DateUserTypeResult
2024-09-06George WoltmanP-PRPM691/906642603313/10488160032325844521/2833637724427940664433391497/16636201944470267267182958207
PRP Cofactor