Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

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Exponent Range:










MnStatusDetails
5055133Factored
FactorDigitsBitsDate
248819473325828298143592374.42021-10-30 23:36:38
ECM
DigitsB1Curves
255000045 / 280
Estimated T-Level: 20.8 ⓘ
TF below 2^64 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)1998-12-13Herb Savage9C06E141BE635BF00
Verified (Factored)2000-04-19Guy Albertelli9C06E141BE635BF04869368
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2021-10-31ATH95A13B91B32C27D2165608753
History
DateUserTypeResult
2021-10-31YoonCERT
PRP Certification
Proof certified good
2021-10-31ATHC-PRP
M5055133/24881947332582829814359 : 95A13B91B32C27D2
PRP proof power = 7
PRP: Verified
Proof certified good
2021-10-30ATHF-PP1
Start=2/7, B1=2500000, B2=92500000, Factor: 24881947332582829814359
2021-04-03-Anonymous-NF
no factor from 2^71 to 2^72
2021-04-01-Anonymous-NF
no factor from 2^70 to 2^71
2021-04-01-Anonymous-NF
no factor from 2^69 to 2^70
2021-02-08TJAOINF
no factor from 2^68 to 2^69
2018-06-11ramgeisNF
no factor from 2^67 to 2^68
2017-06-25mikrNF-PM1
B1=1500000, B2=45000000, E=12
2016-05-20Gordon SpenceNF
no factor from 2^66 to 2^67
2016-02-23Mark RoseNF
no factor from 2^62 to 2^63
2015-08-01snme2pm1NF
no factor from 2^65 to 2^66
2014-09-14monstNF
no factor from 2^64 to 2^65
2014-09-03krackerNF
no factor from 2^63 to 2^64
2009-08-08GrunwalderGIMPNF
no factor from 2^1 to 2^63
2009-07-29USAFSSNF-PM1
B1=60000, B2=1065000, E=6
2008-08-31Sturle SundeNF
no factor from 2^61 to 2^62