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
307381Factored
FactorDigitsBitsDate
1844287720.8old
377042880799434114610771372492994.92021-10-04 13:52:00
ECM
DigitsB1Curves
2550000280 / 280
30250000426 / 640
Estimated T-Level: 28.3
TF below 2^89 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified (Factored)2017-09-22Oliver Kruse4F9413FA1DD493A71013
Verified (Factored)2017-10-12Oliver Kruse4F9413FA1DD493A7125916113
Verified (Factored)2017-12-11ATH4F9413FA1DD493A7112045613
Verified (Factored)2020-04-18Oliver KruseBEF792DB44F5448F113202653
Verified2021-10-04H MichaelsonBEF792DB44F5448F29626953
History
DateUserTypeResult
2024-02-24Denial140NF-PM1
B1=10000000, B2=206662045590
2024-02-22Denial140NF-PM1
B1=10000000
2023-03-18Denial140NF-PM1
B1=1000000, B2=65871826020
2022-02-06Lisander ViaeneNF-PM1
B1=50000
2021-10-04ANONYMOUSCERT
PRP Certification
Proof certified good
2021-10-04H MichaelsonC-PRP
M307381/1844287/37704288079943411461077137249 : BEF792DB44F5448F
PRP proof power = 5
PRP: Verified
Proof certified good
2021-10-04nordiF-ECM
Factor: 37704288079943411461077137249 / (ECM curve 3, B1=250000, B2=36750000, Sigma=4323599132440788)
2020-04-18Oliver KruseC-PRP
M307381/1844287 : BEF792DB44F5448F
PRP: Verified (Factored)
PRP without proof (small exponent)
2017-12-11ATHC-PRP
M307381/1844287 : 4F9413FA1DD493A7
PRP: Verified (Factored)
PRP without proof (small exponent)
2017-10-12Oliver KruseC-PRP
M307381/1844287 : 4F9413FA1DD493A7
PRP: Verified (Factored)
PRP without proof (small exponent)
2017-09-22Oliver KruseC-PRP
M307381/1844287 : 4F9413FA1DD493A7
PRP: Verified (Factored)
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M307381/1844287 : 4F9413FA1DD493A7
PRP without proof (not generated)