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

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
2133217Composite: proven not-prime with Lucas-Lehmer test
TF
No factors below 270
TF target 262
TF below 2^82 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 28667830
B2 = 29740701900
ECM
DigitsB1Curves
2550000280 / 280
30250000149 / 640
Estimated T-Level: 26.2 ⓘ
LL
StatusDateUserResidueShift
VerifiedHerb Savage07E97AD9D3879F650
Verified1999-01-29Brian Doherty07E97AD9D3879F65346284
Verified2018-04-06kkmrkkblmbrbk07E97AD9D3879F651085505
History
DateUserTypeResult
2024-12-19JossNF-PM1
B1=28667830, B2=29740701900
2024-05-04GregNF
no factor from 2^69 to 2^70
2023-01-19Architects CubedNF
no factor from 2^69 to 2^70
2022-12-19Architects CubedNF-PM1
B1=5000000, B2=9896994030
2021-08-05TJAOINF
no factor from 2^68 to 2^69
2019-04-29TJAOINF
no factor from 2^67 to 2^68
2018-04-06kkmrkkblmbrbkC-LL
07E97AD9D3879F65
2017-09-30mikrNF-PM1
B1=2500000, B2=125000000, E=12
2017-09-13JossNF-PM1
B1=504000, B2=5040000, E=6
2017-08-30JossNF-PM1
B1=420000, B2=4200000, E=6
2016-10-29Gordon SpenceNF
no factor from 2^66 to 2^67
2016-06-29JossNF-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
2013-09-07ramgeisNF
no factor from 2^62 to 2^63
2012-04-15Sebastian HornbostelNF
no factor from 2^61 to 2^62
2011-01-23James HeinrichNF-PM1
B1=140000, B2=3045000, E=6
2011-01-12JossNF-PM1
B1=50000
2009-01-05Sturle SundeNF
no factor from 2^60 to 2^61