17 941 423 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 =	2000000
B2 =	806280090

ECM

Digits	B1	Curves
25	50000	1 / 280

Estimated T-Level: 20.0 ⓘ

Status	Date	User	Residue	Shift
Verified	2003-06-30	Jerzy Wojdylo	9BD53B1C2BE7CD67	11476789
Verified	2007-07-04	Theodorus Sunaryo	9BD53B1C2BE7CD67	10215968

History

Date	User	Type	Result
2024-10-08	masser	NF-PM1	B1=2000000, B2=806280090
2022-02-10	masser	NF-PM1	B1=1000000, B2=103083750
2022-01-11	TheJudger	NF	no factor from 2^73 to 2^74
2021-12-27	RichD0	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
2020-03-14	lycorn	NF	no factor from 2^69 to 2^70
2018-02-25	ramgeis	NF	no factor from 2^68 to 2^69
2018-02-25	ramgeis	NF	no factor from 2^67 to 2^68
2016-03-19	Mark Rose	NF	no factor from 2^66 to 2^67