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:










MnStatusDetails
289789Factored
FactorDigitsBitsDate
215458121511134.3old
4935451056227127390472168.72014-09-26 12:10:25
755932321639938157832043459432995.92020-09-29 06:29:22
ECM
DigitsB1Curves
2550000280 / 280
30250000466 / 640
Estimated T-Level: 28.6 ⓘ
TF below 2^90 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified (Factored)2017-09-24Oliver KruseA20D99D3E23D80652013
Verified (Factored)2017-09-29alpertronA20D99D3E23D80652013
Verified (Factored)2017-12-07ATHA20D99D3E23D8065213679113
Verified (Factored)2020-04-17Oliver Kruse0E9D11FBF537CDEB213821253
Verified2020-09-29M Miller0E9D11FBF537CDEB315533953
History
DateUserTypeResult
2023-03-20Naegi MakotoNF-PM1
B1=2000000, B2=69052933950
2022-02-06Lisander ViaeneNF-PM1
B1=50000
2020-09-29Ben DeloCERT
PRP Certification
Proof certified good
2020-09-29M MillerC-PRP
M289789/21545812151/493545105622712739047/75593232163993815783204345943 : 0E9D11FBF537CDEB
PRP proof power = 5
PRP: Verified
Proof certified good
2020-09-29nordiF-ECM
Factor: 75593232163993815783204345943 / (ECM curve 1, B1=250000, B2=25000000, Sigma=4338627842204896)
2020-04-17Oliver KruseC-PRP
M289789/21545812151/493545105622712739047 : 0E9D11FBF537CDEB
PRP: Verified (Factored)
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M289789/21545812151/493545105622712739047 : A20D99D3E23D8065
PRP: Verified (Factored)
PRP without proof (small exponent)
2017-09-29alpertronC-PRP
M289789/21545812151/493545105622712739047 : A20D99D3E23D8065
PRP: Verified (Factored)
PRP without proof (not generated)
2017-09-24Oliver KruseC-PRP
M289789/21545812151/493545105622712739047 : A20D99D3E23D8065
PRP: Verified (Factored)
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M289789/21545812151/493545105622712739047 : A20D99D3E23D8065
PRP without proof (not generated)
2014-09-26TJAOIF-ECM
Factor: 493545105622712739047