11 306 303 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 =	4000000
B2 =	3070262910

ECM

Digits	B1	Curves
25	50000	3 / 280

Estimated T-Level: 20.1 ⓘ

Status	Date	User	Residue	Shift
Verified	2002-04-28	Rich Harms	A24059DB50170553	1038344
Verified	2004-03-26	Team China	A24059DB50170553	7234305

History

Date	User	Type	Result
2024-11-17	TheJudger	NF	no factor from 2^72 to 2^73
2024-05-10	MooMoo2	NF-PM1	B1=4000000, B2=3070262910
2021-10-31	SRBase	NF	no factor from 2^71 to 2^72
2021-08-14	SRBase	NF	no factor from 2^70 to 2^71
2021-08-06	SRBase	NF	no factor from 2^69 to 2^70
2020-02-17	riccardo uberti	NF-PM1	B1=430000, B2=8500000, E=12
2017-12-27	ramgeis	NF	no factor from 2^68 to 2^69
2017-12-27	ramgeis	NF	no factor from 2^67 to 2^68
2016-01-04	VictordeHollander	NF	no factor from 2^66 to 2^67
2015-02-13	Numberwang	NF	no factor from 2^65 to 2^66
2013-11-19	lycorn	NF	no factor from 2^64 to 2^65