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
574307Factored
FactorDigitsBitsDate
72236334471032.8old
879603247635140100631316354342849811137122.72014-11-04 11:23:59
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
Verified2017-09-28Oliver Kruse2A286C2CE5BB1B412013
Verified2017-10-13Oliver Kruse2A286C2CE5BB1B41225800913
Verified2017-12-15ATH2A286C2CE5BB1B41251678113
Unverified (Reliable)2020-04-19Oliver Kruse46F662C8C4A96B__248770853
P-1 factors
DateFactorB1B2
2014-11-048796032476351401006313163543428498111150000050000000
History
DateUserTypeResult
2021-08-05ViliamFNF-PM1
B1=20000000, B2=2520000000
2020-04-19Oliver KruseC-PRP
M574307/7223633447/8796032476351401006313163543428498111 : 46F662C8C4A96B__
PRP: Unverified (Reliable)
PRP without proof (small exponent)
2017-12-15ATHC-PRP
M574307/7223633447/8796032476351401006313163543428498111 : 2A286C2CE5BB1B41
PRP: Unverified (Reliable)
PRP without proof (small exponent)
2017-10-13Oliver KruseC-PRP
M574307/7223633447/8796032476351401006313163543428498111 : 2A286C2CE5BB1B41
PRP: Unverified (Reliable)
PRP without proof (small exponent)
2017-09-28Oliver KruseC-PRP
M574307/7223633447/8796032476351401006313163543428498111 : 2A286C2CE5BB1B41
PRP: Unverified (Reliable)
PRP without proof (not generated)
2017-09-27Oliver KruseC-PRP
M574307/7223633447/8796032476351401006313163543428498111 : 2A286C2CE5BB1B41
PRP without proof (not generated)
2014-11-04alpertronF-PM1
Factor: 8796032476351401006313163543428498111 / (P-1, B1=1500000, B2=50000000, E=12)