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

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MnStatusDetails
18713Composite, with 3 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
598817619.2old
325240372243597191754.92008-08-29 02:24:40
27517114016117185825329986146903133107.82017-09-29 04:19:31
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000003179 / 4588
Estimated T-Level: 38.5
TF below 2^123 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-09-21Oliver KruseEE1262DC1EA129142013
Verified2017-10-02kkmrkkblmbrbk9ADCB5A802932F803013
Verified2017-10-09Chang Chia-Tche9ADCB5A802932F803013
Verified2017-10-14kkmrkkblmbrbk9ADCB5A802932F8031666613
Verified2020-04-17Oliver KruseDEDBB309B402DEFB31480253
Verified2024-07-01kkmrkkblmbrbkDEDBB309B402DEFB31595653
Assigned
AssignedUserWork TypeStage% DoneUpdatedExpired
2025-10-04masserfactor ECM small0.00 % 2025-10-04
2025-10-02masserfactor ECM small0.00 % 2025-10-04
History
DateUserTypeResult
2025-01-01masserNF-PP1
Start=6/5, B1=132000000, B2=131868000000
2024-12-18masserNF-PP1
Start=114/43, B1=132000000, B2=131868000000
2024-12-13masserNF-PP1
Start=2/7, B1=132000000, B2=131868000000
2024-07-01kkmrkkblmbrbkC-PRP
M18713/275171140161171858253299861469031/32524037224359719/598817 : DEDBB309B402DEFB
PRP: Verified
PRP without proof (small exponent)
2023-05-18JacobZNF-PM1
B1=5600000000, B2=16709983434234090
2022-11-25Kevin_9611NF-PM1
B1=50000000, B2=5092942684830
2022-02-06Lisander ViaeneNF-PM1
B1=50000
2020-04-17Oliver KruseC-PRP
M18713/598817/32524037224359719/275171140161171858253299861469031 : DEDBB309B402DEFB
PRP: Verified
PRP without proof (small exponent)
2017-10-14kkmrkkblmbrbkC-PRP
M18713/598817/32524037224359719/275171140161171858253299861469031 : 9ADCB5A802932F80
PRP: Verified
PRP without proof (small exponent)
2017-10-09Chang Chia-TcheC-PRP
M18713/known_factors : 9ADCB5A802932F80
PRP: Verified
PRP without proof (not generated)
2017-10-02kkmrkkblmbrbkC-PRP
M18713/598817/32524037224359719/275171140161171858253299861469031 : 9ADCB5A802932F80
PRP: Verified
PRP without proof (not generated)
2017-09-29Oliver KruseC-PRP
M18713/598817/32524037224359719/275171140161171858253299861469031 : 9ADCB5A802932F80
PRP without proof (not generated)
2017-09-29kkmrkkblmbrbkF-ECM
Factor: 275171140161171858253299861469031 / (ECM curve 148, B1=1000000, B2=100000000)
2017-09-21Oliver KruseC-PRP
M18713/598817/32524037224359719 : EE1262DC1EA12914
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M18713/598817/32524037224359719 : EE1262DC1EA12914
PRP without proof (not generated)
2008-08-29-Anonymous-F-PM1
Factor: 32524037224359719