17 140 639 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 =	1000000
B2 =	504800010

ECM

Digits	B1	Curves
25	50000	1 / 280

Estimated T-Level: 20.0 ⓘ

Status	Date	User	Residue	Shift
Verified	2003-03-07	Ron Lavallee	60709EE3A7003D0F	15010146
Bad	2004-01-18	djwu	3790E52D4ADF9705	9196650
Verified	2005-05-28	Ars Technica Team Prime Rib	60709EE3A7003D0F	200804

History

Date	User	Type	Result
2022-09-10	alpertron	NF-PM1	B1=1000000, B2=504800010
2022-01-11	TheJudger	NF	no factor from 2^73 to 2^74
2022-01-11	-Anonymous-	NF	no factor from 2^74 to 2^75
2022-01-11	-Anonymous-	NF	no factor from 2^73 to 2^74
2021-12-10	-Anonymous-	NF	no factor from 2^72 to 2^73
2021-09-12	-Anonymous-	NF	no factor from 2^71 to 2^72
2021-09-10	SRBase	NF	no factor from 2^70 to 2^71
2020-03-17	lycorn	NF	no factor from 2^69 to 2^70
2017-10-22	ramgeis	NF	no factor from 2^68 to 2^69
2016-12-16	mikr	NF	no factor from 2^67 to 2^68
2014-09-09	Nesowa	NF	no factor from 2^66 to 2^67
2014-03-12	Nesowa	NF	no factor from 2^65 to 2^66