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

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MnStatusDetails
282671Composite, with 4 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
565343619.1old
83739668454837611652.92014-08-28 11:30:08
11528405863054945532232270.02015-01-16 11:44:45
15969181023272023103533032580.42016-04-29 10:20:26
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000212 / 1566
Estimated T-Level: 30.7 ⓘ
TF below 2^97 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-09-22Oliver Kruse91545652971F8CF94013
Verified2017-10-12Oliver Kruse91545652971F8CF948894913
Verified2017-11-06kkmrkkblmbrbk91545652971F8CF9424124413
Verified2020-04-17Oliver Kruse264707EE1361FC0D424933653
Verified (Factored)2022-05-12Jorge Coveiro264707EE1361FC0D117482553
Verified2024-07-05kkmrkkblmbrbk264707EE1361FC0D44020853
History
DateUserTypeResult
2024-11-11yuriy_5-1NF-PM1
B1=26005732, B2=6348019808130
2024-07-05George WoltmanCERT
PRP Certification
Proof certified good
2024-07-05kkmrkkblmbrbkC-PRP
M282671/1152840586305494553223/1596918102327202310353303/565343/8373966845483761 : 264707EE1361FC0D
PRP proof power = 5
PRP: Verified
Proof certified good
2023-02-14USAFSSNF-PM1
B1=3500000, B2=18264117300
2022-05-12Jorge CoveiroC-PRP
M282671/565343 : 264707EE1361FC0D
PRP proof power = 5
PRP: Verified (Factored)
PRP proof never uploaded
2022-02-06Lisander ViaeneNF-PM1
B1=50000
2020-04-17Oliver KruseC-PRP
M282671/565343/8373966845483761/1152840586305494553223/1596918102327202310353303 : 264707EE1361FC0D
PRP: Verified
PRP without proof (small exponent)
2017-11-06kkmrkkblmbrbkC-PRP
M282671/565343/8373966845483761/1152840586305494553223/1596918102327202310353303 : 91545652971F8CF9
PRP: Verified
PRP without proof (small exponent)
2017-10-12Oliver KruseC-PRP
M282671/565343/8373966845483761/1152840586305494553223/1596918102327202310353303 : 91545652971F8CF9
PRP: Verified
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M282671/known_factors : 91545652971F8CF9
PRP without proof (not generated)
2016-04-29TJAOIF-ECM
Factor: 1596918102327202310353303 / (ECM curve 83, B1=50000, B2=5000000)
2015-01-16TJAOIF-ECM
Factor: 1152840586305494553223 / (ECM curve 21, B1=50000, B2=5000000)
2014-08-28TJAOIF
Factor: 8373966845483761