Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
515579Factored
FactorDigitsBitsDate
277175270411134.7old
54080585722677595050446103372892.12022-12-18 00:51:11
ECM
DigitsB1Curves
2550000280 / 280
30250000200 / 640
Estimated T-Level: 26.6 ⓘ
TF below 2^83 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2017-09-27Oliver KruseCF40B5F6CB5204E51013
Verified (Factored)2017-09-28Oliver KruseCF40B5F6CB5204E51013
Verified (Factored)2017-11-07kkmrkkblmbrbkCF40B5F6CB5204E5147035813
Verified (Factored)2020-04-19Oliver KruseB85C152E293D8CC8110973753
Verified2022-12-18Kevin_9611B85C152E293D8CC825646853
P-1 factors
DateFactorB1B2
2022-12-18540805857226775950504461033720000006733146420
History
DateUserTypeResult
2022-12-18Thomas SprengerCERT
PRP Certification
Proof certified good
2022-12-18Kevin_9611C-PRP
M515579/27717527041/5408058572267759505044610337 : B85C152E293D8CC8
PRP proof power = 6
PRP: Verified
Proof certified good
2022-12-18USAFSSF-PM1
Factor: 5408058572267759505044610337 / (P-1, B1=2000000, B2=6733146420)
2020-04-19Oliver KruseC-PRP
M515579/27717527041 : B85C152E293D8CC8
PRP: Verified (Factored)
PRP without proof (small exponent)
2017-11-07kkmrkkblmbrbkC-PRP
M515579/27717527041 : CF40B5F6CB5204E5
PRP: Verified (Factored)
PRP without proof (small exponent)
2017-09-28Oliver KruseC-PRP
M515579/27717527041 : CF40B5F6CB5204E5
PRP: Verified (Factored)
PRP without proof (not generated)
2017-09-27Oliver KruseC-PRP
M515579/27717527041 : CF40B5F6CB5204E5
PRP: Verified (Factored)
PRP without proof (not generated)
2016-03-16alpertronNF-PM1
B1=1500000, B2=50000000, E=12