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
5273Composite, with 4 known prime factors. Cofactor is composite.
Factored
FactorDigitsBitsDate
38134337825.2old
103725303540791443.2old
1056363694645192546392166.5old
142956393362246047783727512683.6old
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
504400000010552 / 16550
Estimated T-Level: 48.2
TF below 2^155 is very unlikely to find new factors due to ECM effort.
PRP Cofactor
StatusDateUserResidueNumber of
known factors
ShiftTypeBase
Verified2017-09-21Oliver KruseBDD2290AB18AB3944013
Verified2017-10-02kkmrkkblmbrbkBDD2290AB18AB3944013
Verified2017-12-07ATHBDD2290AB18AB394418613
Verified2020-04-17Oliver Kruse34F16B85C416E4814220553
Verified2024-02-03Wentao Huang34F16B85C416E481464853
History
DateUserTypeResult
2024-02-03Wentao HuangC-PRP
M5273/38134337/10372530354079/105636369464519254639/14295639336224604778372751 : 34F16B85C416E481
PRP: Verified
PRP without proof (small exponent)
2023-06-29-Anonymous-NF-PM1
B1=59000000000, B2=241667483419362000
2022-01-24Ethan O'ConnorNF-PM1
B1=1300000000
2022-01-24Ethan O'ConnorNF-PM1
B1=130000000, B2=184786243171530
2021-11-19nordiNF-PM1
B1=100000000
2021-11-19nordiNF-PM1
B1=1000000
2020-04-17Oliver KruseC-PRP
M5273/38134337/10372530354079/105636369464519254639/14295639336224604778372751 : 34F16B85C416E481
PRP: Verified
PRP without proof (small exponent)
2017-12-07ATHC-PRP
M5273/38134337/10372530354079/105636369464519254639/14295639336224604778372751 : BDD2290AB18AB394
PRP: Verified
PRP without proof (small exponent)
2017-10-02kkmrkkblmbrbkC-PRP
M5273/38134337/10372530354079/105636369464519254639/14295639336224604778372751 : BDD2290AB18AB394
PRP: Verified
PRP without proof (not generated)
2017-09-21Oliver KruseC-PRP
M5273/known_factors : BDD2290AB18AB394
PRP without proof (not generated)