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

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Exponent Range:










MnStatusDetails
100811Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
201623617.6old
10687982231030.02008-07-26 09:16:55
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000862 / 1566
Estimated T-Level: 32.8 ⓘ
TF below 2^104 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-09-21Oliver Kruse70EF5DED395202482013
Verified2017-10-13kkmrkkblmbrbk70EF5DED3952024824824913
Verified2020-04-17Oliver Kruse44DA8F0C5BF6762E22801553
Verified2022-04-15LordJulius44DA8F0C5BF6762E22299753
Verified (Factored)2022-05-12Jorge Coveiro44DA8F0C5BF6762E11561053
History
DateUserTypeResult
2022-10-25LordJuliusNF
no factor from 2^66 to 2^67
2022-10-25LordJuliusNF
no factor from 2^65 to 2^66
2022-10-25LordJuliusNF
no factor from 2^64 to 2^65
2022-10-25LordJuliusNF
no factor from 2^63 to 2^64
2022-10-25LordJuliusNF
no factor from 2^62 to 2^63
2022-05-12Jorge CoveiroC-PRP
M100811/201623 : 44DA8F0C5BF6762E
PRP: Verified (Factored)
PRP without proof (small exponent)
2022-04-15LordJuliusC-PRP
M100811/201623/1068798223 : 44DA8F0C5BF6762E
PRP: Verified (Factored)
PRP without proof (small exponent)
2022-04-13LordJuliusNF
no factor from 2^61 to 2^62
2022-04-13LordJuliusNF
no factor from 2^60 to 2^61
2022-04-13LordJuliusNF
no factor from 2^59 to 2^60
2022-04-13LordJuliusNF
no factor from 2^58 to 2^59
2022-04-13LordJuliusNF
no factor from 2^57 to 2^58
2021-12-17Seth_TrNF-PM1
B1=1000000000, B2=6588272961270
2020-04-17Oliver KruseC-PRP
M100811/201623/1068798223 : 44DA8F0C5BF6762E
PRP: Verified (Factored)
PRP without proof (small exponent)
2018-11-29ANONYMOUSNF
no factor from 2^61 to 2^62
2018-11-29ANONYMOUSNF
no factor from 2^60 to 2^61
2018-11-01J.R. AllenNF
no factor from 2^59 to 2^60
2018-11-01J.R. AllenNF
no factor from 2^58 to 2^59
2018-11-01J.R. AllenNF
no factor from 2^57 to 2^58
2018-10-25J.R. AllenNF
no factor from 2^52 to 2^57
2017-10-13kkmrkkblmbrbkC-PRP
M100811/201623/1068798223 : 70EF5DED39520248
PRP: Verified (Factored)
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M100811/201623/1068798223 : 70EF5DED39520248
PRP: Verified (Factored)
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M100811/201623/1068798223 : 70EF5DED39520248
PRP without proof (not generated)
2016-10-31kkmrkkblmbrbkNF-PM1
B1=100000000, B2=2000000000, E=12
2008-07-26J FeitsmaF
Factor: 1068798223