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
1518103Factored
FactorDigitsBitsDate
267086900006534075810055692964820140737121.02022-12-22 14:43:03
ECM
DigitsB1Curves
2550000280 / 280
30250000104 / 640
Estimated T-Level: 25.8 ⓘ
TF below 2^81 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)tom ehlert96D29E03F336E2010
Verified (Factored)1998-10-25Paul Victor Novarese96D29E03F336E201481241
Verified (Factored)2015-07-21MadPoo96D29E03F336E201344087
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2022-12-25LordJuliusFD27911FE3AFB8FE147991153
P-1 factors
DateFactorB1B2
2022-12-222670869000065340758100556929648201407100000001322230140
History
DateUserTypeResult
2022-12-25reisfCERT
PRP Certification
Proof certified good
2022-12-25LordJuliusC-PRP
M1518103/2670869000065340758100556929648201407 : FD27911FE3AFB8FE
PRP proof power = 6
PRP: Verified
Proof certified good
2022-12-22JossF-PM1
Factor: 2670869000065340758100556929648201407 / (P-1, B1=10000000, B2=1322230140)
2018-06-06ramgeisNF
no factor from 2^67 to 2^68
2018-03-12TJAOINF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^61 to 2^62
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2016-02-23Mark RoseNF
no factor from 2^58 to 2^61
2015-09-29ramgeisNF
no factor from 2^65 to 2^66
2015-07-21MadPooC-LL
96D29E03F336E201
2015-02-24VictordeHollanderNF-PM1
B1=10000000, B2=200000000, E=12
2015-01-26snme2pm1NF
no factor from 2^64 to 2^65
2015-01-26snme2pm1NF
no factor from 2^63 to 2^64
2013-11-20David CampeauNF-PM1
B1=940000, B2=27260000, E=12
2011-01-28James HeinrichNF-PM1
B1=80000, B2=1320000, E=6
2010-04-04GrunwalderGIMPNF
no factor from 2^1 to 2^63