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

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Exponent Range:










MnStatusDetails
485609Factored
FactorDigitsBitsDate
6370549249939886469636253192789.02022-12-24 01:56:43
ECM
DigitsB1Curves
2550000280 / 280
30250000495 / 640
Estimated T-Level: 28.9
TF below 2^91 is very unlikely to find new factors due to ECM effort.
LL
StatusDateUserResidueShift
Verified (Factored)David Slowinski38610
Verified (Factored)Yuri Sorkin388EA3213ED378610
Verified (Factored)Brian J. Beesley388EA3213ED378610
Verified (Factored)Eivind Triel388EA3213ED37861389766
Verified (Factored)2016-06-01MadPoo388EA3213ED37861452754
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2022-12-24masser3383107A130314BB148348553
History
DateUserTypeResult
2022-12-24curtiscCERT
PRP Certification
Proof certified good
2022-12-24masserC-PRP
M485609/637054924993988646963625319 : 3383107A130314BB
PRP proof power = 6
PRP: Verified
Proof certified good
2022-12-24masserF-PP1
Start=2/7, B1=16000000, B2=496000000, Factor: 637054924993988646963625319
2022-12-18masserNF-PP1
Start=6/5, B1=8000000, B2=216000000
2022-12-12masserNF-PP1
Start=98/13, B1=4000000, B2=96000000
2022-05-22Gordon SpenceNF
no factor from 2^67 to 2^68
2022-03-07LordJuliusNF
no factor from 2^54 to 2^55
2021-09-27YxinityNF
no factor from 2^66 to 2^67
2018-09-29BloodERazorNF
no factor from 2^65 to 2^66
2018-01-13BloodERazorNF
no factor from 2^64 to 2^65
2016-06-01MadPooC-LL
388EA3213ED37861
2016-02-23Mark RoseNF
no factor from 2^58 to 2^60
2015-11-09Gordon SpenceNF
no factor from 2^63 to 2^64
2015-11-09Gordon SpenceNF
no factor from 2^62 to 2^63
2015-07-19NRNF
no factor from 2^61 to 2^62
2012-10-10markrNF-PM1
B1=20000000, B2=1000000000, E=12
2011-11-09lycornNF
no factor from 2^60 to 2^61
2010-11-24Rob_DeeNF-PM1
B1=1000000, B2=2000000, E=6
2010-11-23Rob_DeeNF-PM1
B1=500000, B2=1000000