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

PrimeNet Exponent Status

Exponent Range:





MnDetails
2957
Composite, with 4 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 244
Assignments
AssignedUserWork TypeStage% DoneUpdatedEst CompleteExpired
2025-10-15PhyxickECM2025-10-151970-01-01
2025-10-15PhyxickECM2025-10-151970-01-01
2025-10-15PhyxickECM2025-10-151970-01-01
2025-10-15PhyxickECM2025-10-151970-01-01
2025-10-15PhyxickECM2025-10-151970-01-01
2025-10-15PhyxickECM2025-10-151970-01-01
2025-10-15PhyxickECM2025-10-151970-01-01
2025-10-15PhyxickECM2025-10-151970-01-01
2025-10-15PhyxickECM2025-10-151970-01-01
2025-10-15PhyxickECM2025-10-151970-01-01
2025-10-15PhyxickECM2025-10-151970-01-01
2025-10-15PhyxickECM2025-10-151970-01-01
2025-10-15PhyxickECM2025-10-151970-01-01
2025-10-15PhyxickECM2025-10-151970-01-01
2025-10-15PhyxickECM2025-10-151970-01-01
2025-10-15PhyxickECM2025-10-151970-01-01
Factored
FactorDigitsBitsDate
103474892411133.3old
1365970773611237.0old
7828257067401575748324217810442491093910692944145.82017-04-25 00:47:08
19734667235125470960172113850959113244234858835330763766887960197.02020-01-18 00:54:32
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
50440000003416 / 16550
Estimated T-Level: 46.0 ⓘ
TF below 2^148 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 Kruse5E69442ABD4A64503013
Factored
No proof (small exponent)
2017-10-02kkmrkkblmbrbk5E69442ABD4A64503013
Factored
No proof (small exponent)
2017-12-07ATH5E69442ABD4A64503291713
Verified
No proof (small exponent)
2020-01-18Niels_Mache_Nextcloud74CEA815712A1BF94216553
Verified
No proof (small exponent)
2020-01-20Steve Potocny74CEA815712A1BF94208853
Verified
No proof (small exponent)
2020-04-17Oliver Kruse74CEA815712A1BF94100953
History
DateUserTypeResult
2025-04-19masserNF-PP1Start=187/13, B1=3100000000, B2=3096900000000
2024-06-27masserNF-PM1B1=100000000000, B2=283162593372799140
2021-07-07ViliamFNF-PM1B1=1000000000, B2=191000000000
2020-04-17Oliver KruseC-PRPM2957/10347489241/136597077361/78282570674015757483242178104424910939106929/197346672351254709601721138509591132442348588353307637668879 : 74CEA815712A1BF9
2020-01-20Steve PotocnyC-PRPM2957/10347489241/136597077361/78282570674015757483242178104424910939106929/197346672351254709601721138509591132442348588353307637668879 : 74CEA815712A1BF9
2020-01-18Niels_Mache_NextcloudC-PRPM2957/10347489241/136597077361/78282570674015757483242178104424910939106929/197346672351254709601721138509591132442348588353307637668879 : 74CEA815712A1BF9
2020-01-18Ryan PropperF-ECMFactor: 197346672351254709601721138509591132442348588353307637668879
2017-12-07ATHC-PRPM2957/10347489241/136597077361/78282570674015757483242178104424910939106929 : 5E69442ABD4A6450
2017-10-02kkmrkkblmbrbkC-PRPM2957/10347489241/136597077361/78282570674015757483242178104424910939106929 : 5E69442ABD4A6450
2017-09-21Oliver KruseC-PRPM2957/known_factors : 5E69442ABD4A6450
2017-04-25treborF-ECMFactor: 78282570674015757483242178104424910939106929