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
4831
Composite, with 4 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
9896291423369591549.8old
11773721611458663531960.0old
3584894433046755106765773046692448965415941134.72009-05-10 00:38:38
206263201322000432007751564142338304100752558321380152170.52020-10-14 15:49:12
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
504400000016550 / 16550
5511000000013709 / 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 Kruse11A589B8EC1F59043013
Factored
No proof (small exponent)
2017-10-02kkmrkkblmbrbk11A589B8EC1F59043013
Factored
No proof (small exponent)
2017-12-07ATH11A589B8EC1F59043176413
Factored
No proof (small exponent)
2020-04-17Oliver Kruse48A568979A1DC8D03361753
Verified
No proof (small exponent)
2020-10-14mnd948A568979A1DC8D04227153
Verified
No proof (small exponent)
2020-10-15tottenhoff48A568979A1DC8D04208853
History
DateUserTypeResult
2025-05-22masserNF-PP1Start=96/61, B1=2100000000, B2=2097900000000
2023-05-30-anonymous-NF-PM1B1=66000000000, B2=662102605034570700
2021-07-09ViliamFNF-PM1B1=1000000000, B2=201000000000
2020-10-15tottenhoffC-PRPM4831/989629142336959/1177372161145866353/35848944330467551067657730466924489654159/2062632013220004320077515641423383041007525583213801 : 48A568979A1DC8D0
2020-10-14mnd9C-PRPM4831/989629142336959/1177372161145866353/35848944330467551067657730466924489654159/2062632013220004320077515641423383041007525583213801 : 48A568979A1DC8D0
2020-10-14Ryan PropperF-ECMFactor: 2062632013220004320077515641423383041007525583213801
2020-04-17Oliver KruseC-PRPM4831/989629142336959/1177372161145866353/35848944330467551067657730466924489654159 : 48A568979A1DC8D0
2017-12-07ATHC-PRPM4831/989629142336959/1177372161145866353/35848944330467551067657730466924489654159 : 11A589B8EC1F5904
2017-10-02kkmrkkblmbrbkC-PRPM4831/989629142336959/1177372161145866353/35848944330467551067657730466924489654159 : 11A589B8EC1F5904
2017-09-21Oliver KruseC-PRPM4831/known_factors : 11A589B8EC1F5904
2009-05-10unconnectedF-ECMFactor: 35848944330467551067657730466924489654159