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

PrimeNet Exponent Status

Exponent Range:





MnDetails
4789
Composite, with 3 known prime factors. Cofactor is composite.
Trial Factored to 268
TF target 244
Factored
FactorDigitsBitsDate
68548883991032.7old
218716437299956074201815137387106863266118492746150.62009-05-07 01:16:38
9674186180635829688372744353191721667423092827947156.12021-03-29 23:20:41
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
504400000016550 / 16550
5511000000016285 / 40830
Estimated T-Level: 52.0 ⓘ
TF below 2^168 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 KruseC3E372E50B6E8AB52013
Factored
No proof (small exponent)
2017-10-02kkmrkkblmbrbkC3E372E50B6E8AB52013
Factored
No proof (small exponent)
2017-12-07ATHC3E372E50B6E8AB5259713
Factored
No proof (small exponent)
2020-04-17Oliver KruseFD63163CEC2548722379353
Verified
No proof (small exponent)
2021-03-30mnd9FD63163CEC2548723237953
Verified
No proof (small exponent)
2021-03-31daveward2005FD63163CEC2548723112253
History
DateUserTypeResult
2025-05-21masserNF-PP1Start=177/61, B1=2100000000, B2=2097900000000
2023-05-29-anonymous-NF-PM1B1=66000000000, B2=662102605034570700
2021-07-09ViliamFNF-PM1B1=1000000000, B2=201000000000
2021-03-31daveward2005C-PRPM4789/6854888399/2187164372999560742018151373871068632661184927/96741861806358296883727443531917216674230928279 : FD63163CEC254872
2021-03-30mnd9C-PRPM4789/6854888399/2187164372999560742018151373871068632661184927/96741861806358296883727443531917216674230928279 : FD63163CEC254872
2021-03-29Ryan PropperF-ECMFactor: 96741861806358296883727443531917216674230928279
2020-04-17Oliver KruseC-PRPM4789/6854888399/2187164372999560742018151373871068632661184927 : FD63163CEC254872
2017-12-07ATHC-PRPM4789/6854888399/2187164372999560742018151373871068632661184927 : C3E372E50B6E8AB5
2017-10-02kkmrkkblmbrbkC-PRPM4789/6854888399/2187164372999560742018151373871068632661184927 : C3E372E50B6E8AB5
2017-09-21Oliver KruseC-PRPM4789/known_factors : C3E372E50B6E8AB5
2009-05-07unconnectedF-ECMFactor: 2187164372999560742018151373871068632661184927