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

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Exponent Range:





MnDetails
5791
Composite, with 5 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
926561619.8old
688648976337873913272065.9old
184153244540423259156361954130331100.5old
23888742276102991265611733595563005570956397745147.42020-11-14 13:50:41
5710424825412473714401840091650107648634296280147155.32020-11-14 13:52:48
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
50440000004767 / 16550
Estimated T-Level: 46.4 ⓘ
TF below 2^149 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Factored
No proof (small exponent)
2017-09-21Oliver KruseFC41D8B9C932C5F63013
Factored
No proof (small exponent)
2017-10-02kkmrkkblmbrbkFC41D8B9C932C5F63013
Factored
No proof (small exponent)
2017-12-07ATHFC41D8B9C932C5F6350413
Factored
No proof (small exponent)
2020-04-17Oliver Kruse7CB08198B3C8605A385853
Verified
No proof (small exponent)
2020-11-14Joe S.7CB08198B3C8605A5456453
Factored
No proof (small exponent)
2020-11-15Joe S.7CB08198B3C8605A451053
History
DateUserTypeResult
2025-05-27masserNF-PP1Start=185/43, B1=1500000000, B2=1498500000000
2023-07-20-anonymous-NF-PM1B1=43000000000, B2=180123354312952050
2021-07-05ViliamFNF-PM1B1=1000000000, B2=201000000000
2020-11-15Joe S.C-PRPM5791/926561/68864897633787391327/1841532445404232591563619541303/238887422761029912656117335955630055709563977 : 7CB08198B3C8605A
2020-11-14Joe S.C-PRPM5791/926561/68864897633787391327/1841532445404232591563619541303/238887422761029912656117335955630055709563977/57104248254124737144018400916501076486342962801 : 7CB08198B3C8605A
2020-11-14Ryan PropperF-ECMFactor: 57104248254124737144018400916501076486342962801
2020-11-14Ryan PropperF-ECMFactor: 238887422761029912656117335955630055709563977
2020-04-17Oliver KruseC-PRPM5791/926561/68864897633787391327/1841532445404232591563619541303 : 7CB08198B3C8605A
2017-12-07ATHC-PRPM5791/926561/68864897633787391327/1841532445404232591563619541303 : FC41D8B9C932C5F6
2017-10-02kkmrkkblmbrbkC-PRPM5791/926561/68864897633787391327/1841532445404232591563619541303 : FC41D8B9C932C5F6
2017-09-21Oliver KruseC-PRPM5791/known_factors : FC41D8B9C932C5F6