17 631 191 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Composite: proven not-prime with Lucas-Lehmer test

TF

No factors below 2⁷⁵

TF target 2⁶⁹

P-1

B1 =	1300000
B2 =	540687210

ECM

Digits	B1	Curves
25	50000	1 / 280

Estimated T-Level: 20.0 ⓘ

Status	Date	User	Residue	Shift
Verified	2003-04-19	Tony Knight	0B2691CDD6188477	159644
Verified	2006-08-14	John Jason Slosser	0B2691CDD6188477	7620300

History

Date	User	Type	Result
2024-12-11	Sid & Andy	NF-PM1	B1=1300000, B2=540687210
2022-01-08	-Anonymous-	NF	no factor from 2^74 to 2^75
2022-01-08	-Anonymous-	NF	no factor from 2^73 to 2^74
2021-12-08	-Anonymous-	NF	no factor from 2^72 to 2^73
2021-10-08	-Anonymous-	NF	no factor from 2^71 to 2^72
2021-09-11	SRBase	NF	no factor from 2^70 to 2^71
2020-04-24	lycorn	NF	no factor from 2^69 to 2^70
2018-02-18	ramgeis	NF	no factor from 2^68 to 2^69
2018-02-18	ramgeis	NF	no factor from 2^67 to 2^68
2014-08-25	Nesowa	NF	no factor from 2^66 to 2^67
2014-02-15	Nesowa	NF	no factor from 2^65 to 2^66