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

PrimeNet Exponent Status

Exponent Range:





MnDetails
5021
Composite, with 4 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
40169515.3old
10074296679021159591959.8old
1704130350974570968084737403219932103.7old
65218601324181111929339336677801347424989654338759642676964160198.72024-02-07 14:33:05
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
504400000016550 / 16550
5511000000014217 / 40830
Estimated T-Level: 51.7 ⓘ
TF below 2^167 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 KruseE8266A27D289E1493013
Factored
No proof (small exponent)
2017-10-02kkmrkkblmbrbkE8266A27D289E1493013
Factored
No proof (small exponent)
2017-12-07ATHE8266A27D289E1493378713
Factored
No proof (small exponent)
2020-04-17Oliver KruseB8AA7B10940EE62D3373153
Factored
No proof (small exponent)
2024-02-03Wentao HuangB8AA7B10940EE62D3407553
Verified
No proof (small exponent)
2024-02-08Ryan PropperB8AA7B10940EE62D4161653
History
DateUserTypeResult
2025-04-15masserNF-PP1Start=195/29, B1=2100000000, B2=2097900000000
2024-02-08Ryan PropperC-PRPM5021/40169/1007429667902115959/17041303509745709680847374032199/652186013241811119293393366778013474249896543387596426769641 : B8AA7B10940EE62D
2024-02-07Ryan PropperF-ECMFactor: 652186013241811119293393366778013474249896543387596426769641 / ECM curve 2, B1=260000000, B2=6083641994430, Edwards Sigma=2584250628193816
2024-02-03Wentao HuangC-PRPM5021/40169/1007429667902115959/17041303509745709680847374032199 : B8AA7B10940EE62D
2023-06-02-anonymous-NF-PM1B1=63000000000, B2=632233314515152350
2021-12-15Oliver KruseNF-PM1B1=1000000000, B2=1002849399191640
2021-12-15ANONYMOUSNF-PM1B1=101101101, B2=242002648447560
2020-04-17Oliver KruseC-PRPM5021/40169/1007429667902115959/17041303509745709680847374032199 : B8AA7B10940EE62D
2017-12-07ATHC-PRPM5021/40169/1007429667902115959/17041303509745709680847374032199 : E8266A27D289E149
2017-10-02kkmrkkblmbrbkC-PRPM5021/40169/1007429667902115959/17041303509745709680847374032199 : E8266A27D289E149
2017-09-21Oliver KruseC-PRPM5021/known_factors : E8266A27D289E149
1999-05-16-anonymous-F-PM1Factor: 17041303509745709680847374032199