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

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MnStatusDetails
5534317Factored
FactorDigitsBitsDate
185741353030995051733612374.02019-01-16 02:17:36
ECM
DigitsB1Curves
25500009 / 280
Estimated T-Level: 20.2 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)CP Knerr0E323B873203EA1B0
Verified (Factored)2000-08-17Roberto Kiyoshi Takeda0E323B873203EA1B1424131
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2019-01-16Chang Chia-Tche8C7CE31A7D7AC5CE120395253
Verified2019-01-16ATH8C7CE31A7D7AC5CE124729653
History
DateUserTypeResult
2019-01-16ATHC-PRP
M5534317/18574135303099505173361 : 8C7CE31A7D7AC5CE
PRP: Verified
PRP without proof (not generated)
2019-01-16Chang Chia-TcheC-PRP
M5534317/18574135303099505173361 : 8C7CE31A7D7AC5CE
PRP: Verified
PRP without proof (not generated)
2019-01-16IanGlencrossF-ECM
Factor: 18574135303099505173361 / (ECM curve 3, B1=50000, B2=5000000)
2018-07-05ramgeisNF
no factor from 2^67 to 2^68
2016-07-25Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^1 to 2^62
2015-08-31snme2pm1NF
no factor from 2^65 to 2^66
2014-12-10monstNF
no factor from 2^64 to 2^65
2014-12-09NesowaNF
no factor from 2^63 to 2^64
2009-05-11Rob_DeeNF-PM1
B1=65000, B2=1121250
2009-02-12GrunwalderGIMPNF
no factor from 2^62 to 2^63