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

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Exponent Range:










MnStatusDetails
795551Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
1591103720.6old
26491848311031.32008-07-16 09:26:47
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 KruseB26C2ACB501327092013
Verified2017-10-13Oliver KruseB26C2ACB50132709251897613
Verified2017-12-17ATHB26C2ACB50132709262285013
Verified2020-04-21Oliver Kruse007558449A14415322909253
Verified2025-04-19kkmrkkblmbrbk007558449A144153243667053
History
DateUserTypeResult
2025-04-19Jim DonovanCERT
PRP Certification
Proof certified good
2025-04-19kkmrkkblmbrbkC-PRP
M795551/1591103/2649184831 : 007558449A144153
PRP proof power = 6
PRP: Verified
Proof certified good
2024-09-25timc995NF-PM1
B1=1000000, B2=50255955750
2020-04-21Oliver KruseC-PRP
M795551/1591103/2649184831 : 007558449A144153
PRP: Verified
PRP without proof (small exponent)
2017-12-17ATHC-PRP
M795551/1591103/2649184831 : B26C2ACB50132709
PRP: Verified
PRP without proof (small exponent)
2017-10-13Oliver KruseC-PRP
M795551/1591103/2649184831 : B26C2ACB50132709
PRP: Verified
PRP without proof (small exponent)
2017-09-28Oliver KruseC-PRP
M795551/1591103/2649184831 : B26C2ACB50132709
PRP: Verified
PRP without proof (not generated)
2008-07-16J FeitsmaF
Factor: 2649184831