Marin Mersenne 2^P-1
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Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
4149641Factored
FactorDigitsBitsDate
398365537928.6old
522854767929.02008-09-07 23:38:42
62078629371032.52008-09-07 23:38:42
1418868820680891547.02008-09-07 23:38:42
89542846398238571653.02014-08-31 10:35:03
8521136983512101111859.62015-11-29 11:31:50
26252830903282681211961.22016-04-08 11:05:56
ECM
DigitsB1Curves
25500009 / 280
Estimated T-Level: 20.2
TF below 2^62 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-20kkmrkkblmbrbk473ED6A9D3E6A5617013
Verified2018-01-15Oliver Kruse473ED6A9D3E6A561740712913
History
DateUserTypeResult
2022-12-20LordJuliusNF
no factor from 2^67 to 2^68
2022-06-21LordJuliusNF
no factor from 2^65 to 2^66
2022-06-21LordJuliusNF
no factor from 2^64 to 2^65
2022-06-21LordJuliusNF
no factor from 2^63 to 2^64
2022-06-21LordJuliusNF
no factor from 2^62 to 2^63
2022-06-21LordJuliusNF
no factor from 2^60 to 2^61
2022-03-28Seth_TrNF-PM1
B1=2000000000, B2=200483100090
2021-12-29Seth_TrNF-PM1
B1=1000000000, B2=2510033636880
2021-09-28Seth_TrNF-PM1
B1=1000000000, B2=251000000000
2019-08-27alpertronNF-PM1
B1=30000000, B2=1000000000, E=12
2019-06-18Seth_TrNF
no factor from 2^66 to 2^67
2018-01-15Oliver KruseC-PRP
M4149641/398365537/522854767/6207862937/141886882068089/8954284639823857/852113698351210111/2625283090328268121 : 473ED6A9D3E6A561
PRP: Verified
PRP without proof (not generated)
2017-09-20kkmrkkblmbrbkC-PRP
M4149641/141886882068089/2625283090328268121/398365537/522854767/6207862937/852113698351210111/8954284639823857 : 473ED6A9D3E6A561
PRP: Verified
PRP without proof (not generated)
2016-04-08TJAOIF
Factor: 2625283090328268121 / TF: 61-62
2015-11-29TJAOIF
Factor: 852113698351210111 / TF: 59-60
2014-08-31TJAOIF
Factor: 8954284639823857
2008-09-07Will EdgingtonF
Factor: 141886882068089
2008-09-07Will EdgingtonF
Factor: 6207862937
2008-09-07Will EdgingtonF
Factor: 522854767