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

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MnStatusDetails
764471Composite, with 1 known prime factor. Cofactor is composite.
Factored
FactorDigitsBitsDate
17580629671144738767292270.62008-10-21 18:11:05
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.
LL
StatusDateUserResidueShift
Verified (Factored)David SlowinskiDEA0
Verified (Factored)Tom Cattrall2B9AFAC443224DEA0
Verified (Factored)2002-10-26S574832B9AFAC443224DEA480465
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-27Oliver KruseB60671637B4EFD941013
Verified2017-10-13Oliver KruseB60671637B4EFD94139680313
Verified2017-12-17ATHB60671637B4EFD94120521313
Verified2020-04-21Oliver Kruse276CE9DB1DE6DAAA132129453
Verified2025-04-07kkmrkkblmbrbk276CE9DB1DE6DAAA148760553
History
DateUserTypeResult
2025-04-07Philippians-NavinCERT
PRP Certification
Proof certified good
2025-04-07kkmrkkblmbrbkC-PRP
M764471/1758062967114473876729 : 276CE9DB1DE6DAAA
PRP proof power = 6
PRP: Verified
Proof certified good
2020-04-21Oliver KruseC-PRP
M764471/1758062967114473876729 : 276CE9DB1DE6DAAA
PRP: Verified
PRP without proof (small exponent)
2017-12-17ATHC-PRP
M764471/1758062967114473876729 : B60671637B4EFD94
PRP: Verified
PRP without proof (small exponent)
2017-10-13Oliver KruseC-PRP
M764471/1758062967114473876729 : B60671637B4EFD94
PRP: Verified
PRP without proof (small exponent)
2017-09-27Oliver KruseC-PRP
M764471/1758062967114473876729 : B60671637B4EFD94
PRP: Verified
PRP without proof (not generated)
2008-10-21Sturle SundeF-ECM
Factor: 1758062967114473876729
2008-10-21Sturle SundeNF
no factor from 2^59 to 2^60
2008-10-21Sturle SundeNF
no factor from 2^58 to 2^59