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
139133Factored
FactorDigitsBitsDate
268156662937056171754.6old
207046937691889425612064.22014-06-16 11:48:29
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
351000000193 / 1566
Estimated T-Level: 30.6 ⓘ
TF below 2^97 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors		ShiftTypeBase
Verified2017-09-22Oliver Kruse2F1B66F7EECE67122013
Verified2017-10-13kkmrkkblmbrbk2F1B66F7EECE6712212813713
Verified2020-04-17Oliver Kruse1CA7D6269380E58E213435153
Verified2024-02-03Wentao Huang1CA7D6269380E58E210136553
P-1 factors
DateFactorB1B2
2021-03-162681566629370561713219118757
2023-09-2326815666293705617100000025000000
History
DateUserTypeResult
2024-02-03Naegi MakotoCERT
PRP Certification
Proof certified good
2024-02-03Wentao HuangC-PRP
M139133/26815666293705617/20704693769188942561 : 1CA7D6269380E58E
PRP proof power = 5
PRP: Verified
Proof certified good
2023-12-24Wentao HuangNF-PM1
B1=1000000000, B2=56883533356650
2023-09-23KuyiytereaF-PM1
Factor: 26815666293705617 / (P-1, B1=1000000, B2=25000000, E=12)
2021-03-16manrusF-PM1
Factor: 26815666293705617 / (P-1, B1=1321, B2=9118757, E=12)
2020-04-17Oliver KruseC-PRP
M139133/26815666293705617/20704693769188942561 : 1CA7D6269380E58E
PRP: Verified
PRP without proof (small exponent)
2017-10-13kkmrkkblmbrbkC-PRP
M139133/26815666293705617/20704693769188942561 : 2F1B66F7EECE6712
PRP: Verified
PRP without proof (not generated)
2017-09-22Oliver KruseC-PRP
M139133/26815666293705617/20704693769188942561 : 2F1B66F7EECE6712
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M139133/26815666293705617/20704693769188942561 : 2F1B66F7EECE6712
PRP without proof (not generated)
2017-03-30kkmrkkblmbrbkNF-PM1
B1=100000000, B2=2000000000, E=12
2014-06-16TJAOIF-ECM
Factor: 20704693769188942561