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

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MnStatusDetails
2773349Composite, with 2 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
16264249743531340.6old
28075306768717506746812271.22022-12-01 20:48:28
ECM
DigitsB1Curves
255000057 / 280
Estimated T-Level: 21.0 ⓘ
TF below 2^65 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2017-10-21Oliver Kruse52F898FB49AA4EBE1254632353
Verified (Factored)2017-12-06kkmrkkblmbrbk52F898FB49AA4EBE158080553
Verified2022-12-14/r/counting52F898FB49AA4EBE2253093653
Verified2022-12-14kracker52F898FB49AA4EBE2126197853
P-1 factors
DateFactorB1B2
2022-12-012807530676871750674681320000261254070
History
DateUserTypeResult
2022-12-14iwesCERT
PRP Certification
Proof certified good
2022-12-14mrdedeblCERT
PRP Certification
Proof certified good
2022-12-14krackerC-PRP
M2773349/1626424974353/2807530676871750674681 : 52F898FB49AA4EBE
PRP proof power = 7
PRP: Verified
Proof certified good
2022-12-14/r/countingC-PRP
M2773349/1626424974353/2807530676871750674681 : 52F898FB49AA4EBE
PRP proof power = 7
PRP: Verified
Proof certified good
2022-12-01USAFSSF-PM1
Factor: 2807530676871750674681 / (P-1, B1=320000, B2=261254070)
2017-12-06kkmrkkblmbrbkC-PRP
M2773349/1626424974353 : 52F898FB49AA4EBE
PRP: Verified (Factored)
PRP without proof (not generated)
2017-10-21Oliver KruseC-PRP
M2773349/1626424974353 : 52F898FB49AA4EBE
PRP: Verified (Factored)
PRP without proof (not generated)