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

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Exponent Range:










MnStatusDetails
556103Factored
FactorDigitsBitsDate
79269068177591342.8old
2737880584960811548.02008-09-30 13:18:15
1164221302175812858353521832786.62020-09-04 02:38:34
ECM
DigitsB1Curves
2550000280 / 280
30250000301 / 640
Estimated T-Level: 27.4
TF below 2^86 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-09-27Oliver Kruse2DB8C0C2105CE2892013
Verified (Factored)2017-09-28Oliver Kruse2DB8C0C2105CE2892013
Verified (Factored)2017-11-09kkmrkkblmbrbk2DB8C0C2105CE289210881013
Verified (Factored)2020-04-19Oliver Kruse94D805DACA420580241822453
Verified2020-09-04ATH94D805DACA42058032075353
Verified2020-09-04atrench94D805DACA42058031351853
History
DateUserTypeResult
2022-12-07USAFSSNF-PM1
B1=2000000, B2=6281645370
2020-09-04atrenchC-PRP
M556103/7926906817759/273788058496081/116422130217581285835352183 : 94D805DACA420580
PRP: Verified
PRP without proof (small exponent)
2020-09-04Simon JosefssonCERT
PRP Certification
Proof certified good
2020-09-04ATHC-PRP
M556103/7926906817759/273788058496081/116422130217581285835352183 : 94D805DACA420580
PRP proof power = 6
PRP: Verified
Proof certified good
2020-09-04nordiF-ECM
Factor: 116422130217581285835352183 / (ECM curve 101, B1=250000, B2=25000000, Sigma=3613614027070557)
2020-04-19Oliver KruseC-PRP
M556103/7926906817759/273788058496081 : 94D805DACA420580
PRP: Verified
PRP without proof (small exponent)
2017-11-09kkmrkkblmbrbkC-PRP
M556103/7926906817759/273788058496081 : 2DB8C0C2105CE289
PRP: Verified
PRP without proof (small exponent)
2017-09-28Oliver KruseC-PRP
M556103/7926906817759/273788058496081 : 2DB8C0C2105CE289
PRP: Verified
PRP without proof (not generated)
2017-09-27Oliver KruseC-PRP
M556103/7926906817759/273788058496081 : 2DB8C0C2105CE289
PRP: Verified
PRP without proof (not generated)
2016-03-17alpertronNF-PM1
B1=1500000, B2=50000000, E=12
2008-09-30markrF
Factor: 273788058496081