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

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MnStatusDetails
245477Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
615656330728631445.8old
8544557166155591549.62008-09-30 13:18:03
ECM
DigitsB1Curves
2550000280 / 280
30250000634 / 640
Estimated T-Level: 30.0
TF below 2^95 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-22Oliver Kruse09A8135F29C45FAC2013
Verified2017-10-12kkmrkkblmbrbk09A8135F29C45FAC26701913
Verified2020-04-17Oliver Kruse44E2C52ABE865C7C210562553
Verified2024-02-03Wentao Huang44E2C52ABE865C7C218974353
History
DateUserTypeResult
2024-02-03Naegi MakotoCERT
PRP Certification
Proof certified good
2024-02-03Wentao HuangC-PRP
M245477/61565633072863/854455716615559 : 44E2C52ABE865C7C
PRP proof power = 5
PRP: Verified
Proof certified good
2022-04-13Oliver KruseNF-PM1
B1=30000000, B2=10120247026890
2021-07-29Oliver KruseNF-PM1
B1=30000000, B2=3000000000, E=24
2020-04-17Oliver KruseC-PRP
M245477/61565633072863/854455716615559 : 44E2C52ABE865C7C
PRP: Verified
PRP without proof (small exponent)
2017-10-12kkmrkkblmbrbkC-PRP
M245477/61565633072863/854455716615559 : 09A8135F29C45FAC
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M245477/61565633072863/854455716615559 : 09A8135F29C45FAC
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M245477/61565633072863/854455716615559 : 09A8135F29C45FAC
PRP without proof (not generated)
2008-09-30markrF-PM1
Factor: 854455716615559