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

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MnStatusDetails
2124233Factored
FactorDigitsBitsDate
1170878491993458095415832476.62017-02-28 21:08:59
ECM
DigitsB1Curves
2550000113 / 280
Estimated T-Level: 22.0 ⓘ
TF below 2^68 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Joshua Cope24D569A5294DCB240
Verified (Factored)1999-02-07John & Marty Huffman24D569A5294DCB242086898
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-10-08Oliver KruseFF5089EE533941EC1013
Verified2017-11-18Chang Chia-TcheFF5089EE533941EC166846213
History
DateUserTypeResult
2023-01-28USAFSSNF-PM1
B1=288000, B2=338550030
2017-11-18Chang Chia-TcheC-PRP
M2124233/117087849199345809541583 : FF5089EE533941EC
PRP: Verified
PRP without proof (not generated)
2017-10-08Oliver KruseC-PRP
M2124233/117087849199345809541583 : FF5089EE533941EC
PRP: Verified
PRP without proof (not generated)
2017-02-28bamF-ECM
Factor: 117087849199345809541583 / (ECM curve 3, B1=50000, B2=5000000)
2016-10-15Gordon SpenceNF
no factor from 2^66 to 2^67
2016-06-25JossNF-PM1
B1=210000, B2=6090000, E=12
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2016-01-06ramgeisNF
no factor from 2^65 to 2^66
2015-03-15VictordeHollanderNF
no factor from 2^64 to 2^65
2015-03-15VictordeHollanderNF
no factor from 2^63 to 2^64
2013-09-06ramgeisNF
no factor from 2^62 to 2^63
2012-04-03Sebastian HornbostelNF
no factor from 2^61 to 2^62
2011-01-24James HeinrichNF-PM1
B1=140000, B2=3045000, E=6
2011-01-11JossNF-PM1
B1=50000
2011-01-01JossNF-PM1
B1=30000
2009-08-03USAFSSNF-PM1
B1=20000, B2=265000
2009-01-03Sturle SundeNF
no factor from 2^60 to 2^61