Marin Mersenne 2^P-1
Username
Password
Forgot password?
White
Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

Exponent Range:










MnStatusDetails
20807TF
No factors below 266
TF target 244
TF below 2^150 is very unlikely to find new factors due to ECM effort.
P-1
B1 = 25000000000
B2 = 2500246931852670
ECM
DigitsB1Curves
2550000280 / 280
30250000640 / 640
3510000001566 / 1566
4030000004588 / 4588
45110000009201 / 9201
50440000005757 / 16550
Estimated T-Level: 46.7 ⓘ
LL
StatusDateUserResidueShift
VerifiedUnknown46670
VerifiedGeorge Woltman9F4D7F7A42ADC6670
VerifiedBrian J. Beesley9F4D7F7A42ADC6670
Verified2015-04-11MadPoo9F4D7F7A42ADC6672050
History
DateUserTypeResult
2023-08-18masserNF-PP1
Start=6/5, B1=360000000, B2=64440000000
2023-07-08masserNF-PP1
Start=144/59, B1=360000000, B2=14400000000
2022-06-05ATHNF-PM1
B1=25000000000, B2=2500246931852670
2021-12-24Stef42NF-PM1
B1=10000000000, B2=750656704147350
2021-05-08ATHNF-PP1
Start=2/7, B1=500000000, B2=101500000000
2020-01-03YxinityNF
no factor from 2^65 to 2^66
2020-01-03YxinityNF
no factor from 2^65 to 2^66
2018-10-04YxinityNF
no factor from 2^64 to 2^65
2018-10-03YxinityNF
no factor from 2^64 to 2^65
2018-01-24YxinityNF
no factor from 2^63 to 2^64
2018-01-20YxinityNF
no factor from 2^63 to 2^64
2016-09-14Sid & AndyNF
no factor from 2^62 to 2^63
2016-02-23LaurVNF
no factor from 2^57 to 2^58
2015-04-11MadPooC-LL
9F4D7F7A42ADC667
2013-02-22bcp19NF-PM1
B1=10000000000, B2=100000000000, E=12
2012-08-25bcp19NF
no factor from 2^61 to 2^62
2011-06-12Richard B. WoodsNF
no factor from 2^60 to 2^61
2009-01-30Sturle SundeNF
no factor from 2^59 to 2^60
2009-01-10Sturle SundeNF
no factor from 2^58 to 2^59