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

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MnStatusDetails
22859Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
117215208953684988675772373.3old
18290345787254671425384892580.62009-06-03 01:40:46
427856420363137373328223272685.12014-10-18 06:46:25
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000001331 / 9201
Estimated T-Level: 40.7
TF below 2^130 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver Kruse2971E98E6F80B2573013
Verified2017-10-02kkmrkkblmbrbk2971E98E6F80B2573013
Verified2017-12-07ATH2971E98E6F80B2573936013
Verified2020-04-17Oliver Kruse59D39A0BE7E3341C3807353
Verified2024-07-01kkmrkkblmbrbk59D39A0BE7E3341C31652053
History
DateUserTypeResult
2025-01-14masserNF-PP1
Start=173/29, B1=190000000, B2=189810000000
2025-01-10masserNF-PP1
Start=2/7, B1=190000000, B2=189810000000
2024-07-01kkmrkkblmbrbkC-PRP
M22859/11721520895368498867577/1829034578725467142538489/42785642036313737332822327 : 59D39A0BE7E3341C
PRP: Verified
PRP without proof (small exponent)
2023-12-28nordiNF-PM1
B1=8000000000, B2=2408138284051500
2023-04-21nordiNF-PM1
B1=8000000000
2020-04-17Oliver KruseC-PRP
M22859/11721520895368498867577/1829034578725467142538489/42785642036313737332822327 : 59D39A0BE7E3341C
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M22859/11721520895368498867577/1829034578725467142538489/42785642036313737332822327 : 2971E98E6F80B257
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M22859/11721520895368498867577/1829034578725467142538489/42785642036313737332822327 : 2971E98E6F80B257
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M22859/11721520895368498867577/1829034578725467142538489/42785642036313737332822327 : 2971E98E6F80B257
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M22859/11721520895368498867577/1829034578725467142538489/42785642036313737332822327 : 2971E98E6F80B257
PRP without proof (not generated)
2016-11-22kkmrkkblmbrbkNF-PM1
B1=500000000, B2=10000000000, E=12
2014-10-18James HintzF-ECM
Factor: 42785642036313737332822327 / (ECM curve 229, B1=250000, B2=25000000)
2009-06-03-Anonymous-F-ECM
Factor: 1829034578725467142538489