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

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MnStatusDetails
2127751TF
No factors below 270
TF target 262
TF below 2^73 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 5000000
B2 = 9896994030
ECM
DigitsB1Curves
2550000200 / 280
Estimated T-Level: 23.6 ⓘ
LL
StatusDateUserResidueShift
VerifiedPetri Holopainen2D35F288433BA5D20
Verified1999-01-29Robert Bungener2D35F288433BA5D21045954
Verified2018-04-05kkmrkkblmbrbk2D35F288433BA5D21193324
History
DateUserTypeResult
2023-01-12Architects CubedNF
no factor from 2^69 to 2^70
2022-12-18Architects CubedNF-PM1
B1=5000000, B2=9896994030
2021-08-12TJAOINF
no factor from 2^68 to 2^69
2019-04-29TJAOINF
no factor from 2^67 to 2^68
2018-04-05kkmrkkblmbrbkC-LL
2D35F288433BA5D2
2017-09-14mikrNF-PM1
B1=2500000, B2=125000000, E=12
2017-08-30JossNF-PM1
B1=504000, B2=5040000, E=6
2017-08-19JossNF-PM1
B1=420000, B2=4200000, E=6
2016-10-15Gordon SpenceNF
no factor from 2^66 to 2^67
2016-06-28JossNF-PM1
B1=210000, B2=6090000, E=12
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2015-12-27ramgeisNF
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
2012-04-04Sebastian HornbostelNF
no factor from 2^61 to 2^62
2011-01-25James HeinrichNF-PM1
B1=140000, B2=3045000, E=6
2011-01-12JossNF-PM1
B1=50000
2011-01-01JossNF-PM1
B1=30000
2009-08-03USAFSSNF-PM1
B1=20000, B2=265000
2009-01-04Sturle SundeNF
no factor from 2^60 to 2^61