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
4201
Composite, with 4 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
36126919611031.8old
1034340224871236.6old
403547446263811131755.2old
152141532299523374045872765613275531137120.22010-08-19 09:48:36
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
504400000016550 / 16550
5511000000019221 / 40830
Estimated T-Level: 52.4 ⓘ
TF below 2^169 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusProofDateUserResidueNumber of
known factors		ShiftTypeBase
Verified
No proof (small exponent)
2017-09-21Oliver Kruse77036ECE526E12744013
Verified
No proof (small exponent)
2017-10-02kkmrkkblmbrbk77036ECE526E12744013
Verified
No proof (small exponent)
2017-12-07ATH77036ECE526E12744371313
Verified
No proof (small exponent)
2020-04-17Oliver Kruse4082D52843F8F7CB4256853
Verified
No proof (small exponent)
2024-02-03Wentao Huang4082D52843F8F7CB4319153
History
DateUserTypeResult
2025-05-13masserNF-PP1Start=149/29, B1=2600000000, B2=2597400000000
2024-02-03Wentao HuangC-PRPM4201/3612691961/103434022487/40354744626381113/1521415322995233740458727656132755311 : 4082D52843F8F7CB
2023-05-18-anonymous-NF-PM1B1=77000000000, B2=771645928060297290
2021-12-15Oliver KruseNF-PM1B1=1000000000, B2=1004648912737470
2021-12-14ANONYMOUSNF-PM1B1=101101101, B2=239432550687330
2021-12-14ANONYMOUSNF-PM1B1=1000000, B2=22557075791250
2020-04-17Oliver KruseC-PRPM4201/3612691961/103434022487/40354744626381113/1521415322995233740458727656132755311 : 4082D52843F8F7CB
2017-12-07ATHC-PRPM4201/3612691961/103434022487/40354744626381113/1521415322995233740458727656132755311 : 77036ECE526E1274
2017-10-02kkmrkkblmbrbkC-PRPM4201/3612691961/103434022487/40354744626381113/1521415322995233740458727656132755311 : 77036ECE526E1274
2017-09-21Oliver KruseC-PRPM4201/known_factors : 77036ECE526E1274
2010-08-19James HintzF-ECMFactor: 1521415322995233740458727656132755311