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

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MnStatusDetails
3482273Factored
FactorDigitsBitsDate
6179903997530836123259509894174364316138125.52014-09-28 18:10:50
ECM
DigitsB1Curves
25500006 / 280
Estimated T-Level: 20.1
TF below 2^62 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)Alexey Khlyamkov1AB9A97D1FB4B35B0
Verified (Factored)1999-07-27Tom Mossberg1AB9A97D1FB4B35B534474
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-11-06kkmrkkblmbrbk668704657540F788188853553
Verified2017-11-23Oliver Kruse668704657540F7881281663853
P-1 factors
DateFactorB1B2
2014-09-286179903997530836123259509894174364316150000010000000
History
DateUserTypeResult
2022-07-17JossNF-PM1
B1=3482273, B2=3532210500
2022-05-30LordJuliusNF
no factor from 2^66 to 2^67
2022-05-30LordJuliusNF
no factor from 2^65 to 2^66
2022-05-27LordJuliusNF
no factor from 2^64 to 2^65
2022-05-27LordJuliusNF
no factor from 2^63 to 2^64
2022-05-27LordJuliusNF
no factor from 2^62 to 2^63
2022-05-27LordJuliusNF
no factor from 2^1 to 2^62
2021-12-22JossNF-PM1
B1=3482273, B2=640204950
2021-08-04JossNF-PM1
B1=3482273, B2=111529092, E=6
2021-08-04JossNF-PM1
B1=3482273, B2=108046819, E=6
2021-08-04JossNF-PM1
B1=3482273, B2=104564546, E=6
2021-02-15JossNF
no factor from 2^71 to 2^72
2021-02-15JossNF
no factor from 2^70 to 2^71
2021-02-15JossNF
no factor from 2^69 to 2^70
2021-02-14JossNF
no factor from 2^68 to 2^69
2021-02-14JossNF
no factor from 2^67 to 2^68
2021-02-14JossNF
no factor from 2^66 to 2^67
2021-02-13JossNF
no factor from 2^65 to 2^66
2017-11-23Oliver KruseC-PRP
M3482273/61799039975308361232595098941743643161 : 668704657540F788
PRP: Verified
PRP without proof (not generated)
2017-11-06kkmrkkblmbrbkC-PRP
M3482273/61799039975308361232595098941743643161 : 668704657540F788
PRP: Verified
PRP without proof (not generated)
2014-09-28HBendtzF-PM1
Factor: 61799039975308361232595098941743643161 / (P-1, B1=500000, B2=10000000, E=12)
2014-08-21JossNF-PM1
B1=78432
2012-08-18GrunwalderGIMPNF
no factor from 2^1 to 2^63
2011-11-14USAFSSNF-PM1
B1=60000, B2=990000, E=6
2011-07-18markrNF
no factor from 2^61 to 2^62
2009-07-07Carsten KossendeyNF-PM1
B1=20000, B2=240000
2009-03-19S485122NF
no factor from 2^60 to 2^61