17 930 249 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 2⁷⁴

TF target 2⁶⁹

P-1

B1 =	4000000
B2 =	4237417800

ECM

Digits	B1	Curves
25	50000	9 / 280

Estimated T-Level: 20.2 ⓘ

Status	Date	User	Residue	Shift
Verified	2004-01-27	Ed Mougey	C2D4B5B60FC8DDF9	16533031
Verified	2007-07-04	cameron w	C2D4B5B60FC8DDF9	32300

History

Date	User	Type	Result
2024-10-16	masser	NF-PM1	B1=4000000, B2=4237417800
2022-02-06	masser	NF-PM1	B1=1000000, B2=103083750
2022-01-11	TheJudger	NF	no factor from 2^73 to 2^74
2022-01-02	RichD0	NF	no factor from 2^72 to 2^73
2021-09-17	-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
2018-02-16	ramgeis	NF	no factor from 2^68 to 2^69
2018-02-16	ramgeis	NF	no factor from 2^67 to 2^68
2017-09-18	Tha	NF-PM1	B1=300000, B2=6000000, E=12
2016-03-21	Mark Rose	NF	no factor from 2^66 to 2^67