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
550163Factored
FactorDigitsBitsDate
62718583825.9old
10398080711030.02008-07-21 09:21:31
97033843782711343.12008-07-21 09:21:31
1594251072697355771857.12015-05-28 11:06:12
133064432131058644312063.52014-11-04 20:01:38
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 Kruse1EA83B89084EF1715013
Verified2017-10-13Oliver Kruse1EA83B89084EF171550078713
Verified2017-12-15ATH1EA83B89084EF171510548913
Unverified (Reliable)2020-04-19Oliver Kruse61FF0B56A7B637__530953053
P-1 factors
DateFactorB1B2
2014-11-0413306443213105864431150000050000000
History
DateUserTypeResult
2022-11-16LordJuliusNF
no factor from 2^66 to 2^67
2022-11-16LordJuliusNF
no factor from 2^65 to 2^66
2022-11-16LordJuliusNF
no factor from 2^64 to 2^65
2022-11-16LordJuliusNF
no factor from 2^62 to 2^63
2022-11-16LordJuliusNF
no factor from 2^61 to 2^62
2022-11-16LordJuliusNF
no factor from 2^60 to 2^61
2021-08-27ViliamFNF-PM1
B1=15000000, B2=1815000000
2020-04-19Oliver KruseC-PRP
M550163/62718583/1039808071/9703384378271/159425107269735577/13306443213105864431 : 61FF0B56A7B637__
PRP: Unverified (Reliable)
PRP without proof (small exponent)
2017-12-15ATHC-PRP
M550163/62718583/1039808071/9703384378271/159425107269735577/13306443213105864431 : 1EA83B89084EF171
PRP: Unverified (Reliable)
PRP without proof (small exponent)
2017-10-13Oliver KruseC-PRP
M550163/62718583/1039808071/9703384378271/13306443213105864431/159425107269735577 : 1EA83B89084EF171
PRP: Unverified (Reliable)
PRP without proof (small exponent)
2017-09-28Oliver KruseC-PRP
M550163/62718583/1039808071/9703384378271/13306443213105864431/159425107269735577 : 1EA83B89084EF171
PRP: Unverified (Reliable)
PRP without proof (not generated)
2017-09-27Oliver KruseC-PRP
M550163/62718583/1039808071/9703384378271/13306443213105864431/159425107269735577 : 1EA83B89084EF171
PRP without proof (not generated)
2015-05-28TJAOIF
Factor: 159425107269735577 / TF: 57-58
2014-11-04alpertronF-PM1
Factor: 13306443213105864431 / (P-1, B1=1500000, B2=50000000, E=12)
2008-07-21J FeitsmaF
Factor: 9703384378271
2008-07-21J FeitsmaF
Factor: 1039808071