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

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MnStatusDetails
920891Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
1841783720.8old
ECM
DigitsB1Curves
2550000280 / 280
30250000100 / 640
Estimated T-Level: 25.8
TF below 2^81 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-28Oliver Kruse4E07574B4DC704111013
Verified2017-10-14Oliver Kruse4E07574B4DC70411129939713
Verified2017-12-22ATH4E07574B4DC70411191935713
Verified2020-04-23Oliver Kruse319F532B34EFC624189444753
Verified2022-05-12Jorge Coveiro319F532B34EFC624168603953
Verified2025-01-05kkmrkkblmbrbk319F532B34EFC624165142153
History
DateUserTypeResult
2025-01-05Theo PolidanoCERT
PRP Certification
Proof certified good
2025-01-05kkmrkkblmbrbkC-PRP
M920891/1841783 : 319F532B34EFC624
PRP proof power = 6
PRP: Verified
Proof certified good
2022-05-12Jorge CoveiroC-PRP
M920891/1841783 : 319F532B34EFC624
PRP proof power = 6
PRP: Verified
PRP proof never uploaded
2020-04-23Oliver KruseC-PRP
M920891/1841783 : 319F532B34EFC624
PRP: Verified
PRP without proof (small exponent)
2017-12-22ATHC-PRP
M920891/1841783 : 4E07574B4DC70411
PRP: Verified
PRP without proof (small exponent)
2017-10-14Oliver KruseC-PRP
M920891/1841783 : 4E07574B4DC70411
PRP: Verified
PRP without proof (small exponent)
2017-09-28Oliver KruseC-PRP
M920891/1841783 : 4E07574B4DC70411
PRP: Verified
PRP without proof (not generated)
2016-03-17alpertronNF-PM1
B1=200000, B2=5000000, E=6