12 174 011 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 2⁷³

TF target 2⁶⁸

P-1

B1 =	700000
B2 =	355807620

ECM

Digits	B1	Curves
25	50000	2 / 280

Estimated T-Level: 20.0 ⓘ

Status	Date	User	Residue	Shift
Verified	2001-12-01	Michael Schiansky	D198E8B1699D6950	11154053
Verified	2004-07-26	Maksim Platov	D198E8B1699D6950	1107628

History

Date	User	Type	Result
2024-11-22	Sid & Andy	NF	no factor from 2^72 to 2^73
2021-12-21	lycorn	NF-PM1	B1=700000, B2=355807620
2021-10-24	-Anonymous-	NF	no factor from 2^71 to 2^72
2021-06-28	ZacHFX	NF	no factor from 2^70 to 2^71
2021-06-28	ZacHFX	NF	no factor from 2^69 to 2^70
2017-11-06	ramgeis	NF	no factor from 2^68 to 2^69
2015-07-10	Tha	NF	no factor from 2^67 to 2^68
2015-03-01	Tha	NF	no factor from 2^66 to 2^67
2013-10-03	Nesowa	NF	no factor from 2^65 to 2^66
2013-08-19	lycorn	NF	no factor from 2^64 to 2^65