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

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MnStatusDetails
699287Composite, with 4 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
96501607826.5old
455122720334891445.42014-01-17 09:46:01
1535177434204695617852332477.02015-10-02 10:46:45
355651314690526162033574412684.92015-10-02 10:46:45
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 KruseCF1B7421272504DA4013
Verified2017-09-30alpertronCF1B7421272504DA4013
Verified2017-12-08ATHCF1B7421272504DA410972113
Verified2020-04-20Oliver Kruse03CFC54CBFBA3FF242760853
Verified2025-03-13kkmrkkblmbrbk03CFC54CBFBA3FF2467703153
History
DateUserTypeResult
2025-03-13ANONYMOUSCERT
PRP Certification
Proof certified good
2025-03-13kkmrkkblmbrbkC-PRP
M699287/96501607/45512272033489/153517743420469561785233/35565131469052616203357441 : 03CFC54CBFBA3FF2
PRP proof power = 6
PRP: Verified
Proof certified good
2024-09-24timc995NF-PM1
B1=1000000, B2=50255955750
2020-04-20Oliver KruseC-PRP
M699287/96501607/45512272033489/153517743420469561785233/35565131469052616203357441 : 03CFC54CBFBA3FF2
PRP: Verified
PRP without proof (small exponent)
2017-12-08ATHC-PRP
M699287/96501607/45512272033489/153517743420469561785233/35565131469052616203357441 : CF1B7421272504DA
PRP: Verified
PRP without proof (small exponent)
2017-09-30alpertronC-PRP
M699287/153517743420469561785233/35565131469052616203357441/45512272033489/96501607 : CF1B7421272504DA
PRP: Verified
PRP without proof (not generated)
2017-09-28Oliver KruseC-PRP
M699287/96501607/45512272033489/153517743420469561785233/35565131469052616203357441 : CF1B7421272504DA
PRP: Verified
PRP without proof (not generated)
2017-09-27Oliver KruseC-PRP
M699287/96501607/45512272033489/153517743420469561785233/35565131469052616203357441 : CF1B7421272504DA
PRP without proof (not generated)
2015-10-02TJAOIF-ECM
Factor: 35565131469052616203357441 / (ECM curve 14, B1=50000, B2=5000000)
2015-10-02TJAOIF-ECM
Factor: 153517743420469561785233 / (ECM curve 5, B1=50000, B2=5000000)
2014-01-17TJAOIF
Factor: 45512272033489