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

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Exponent Range:










MnStatusDetails
15051823Factored
FactorDigitsBitsDate
374636709956297007189612375.02022-04-14 14:26:56
ECM
DigitsB1Curves
255000014 / 280
Estimated T-Level: 20.3 ⓘ
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)2002-08-24C. Cooper / S. BooneA2A01A97A20970068817827
Verified (Factored)2005-09-22davyA2A01A97A20970063583938
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2023-06-11Perig502F01008281E0D71246782653
History
DateUserTypeResult
2023-11-04nordiNF-PM1
B1=569000, B2=561249150
2023-10-21nordiNF-PM1
B1=569000
2023-06-11curtiscCERT
PRP Certification
Proof certified good
2023-06-11PerigC-PRP
M15051823/37463670995629700718961 : 502F01008281E0D7
PRP proof power = 8
PRP: Verified
Proof certified good
2022-04-14ATHF-PP1
Start=2/7, B1=1000000, B2=31000000, Factor: 37463670995629700718961
2022-03-06Dylan DelgadoNF
no factor from 2^72 to 2^73
2021-10-09-Anonymous-NF
no factor from 2^71 to 2^72
2021-09-02SRBaseNF
no factor from 2^70 to 2^71
2020-07-12YxinityNF
no factor from 2^69 to 2^70
2017-10-04ramgeisNF
no factor from 2^68 to 2^69
2016-02-01mikrNF
no factor from 2^67 to 2^68
2015-09-17ThaNF-PM1
B1=300000, B2=6000000, E=12
2014-06-11NesowaNF
no factor from 2^66 to 2^67
2014-06-11NesowaNF
no factor from 2^65 to 2^66