11 220 283 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 =	10000000
B2 =	20013932400

ECM

Digits	B1	Curves
25	50000	2 / 280

Estimated T-Level: 20.0 ⓘ

Status	Date	User	Residue	Shift
Verified	2001-03-05	Lawrence Ng	3411F2A5102217F4	144192
Verified	2004-01-27	Penny Black Q	3411F2A5102217F4	2946916
Verified	2017-06-05	storm5510	3411F2A5102217F4	12776

History

Date	User	Type	Result
2025-02-05	James Heinrich	NF	no factor from 2^72 to 2^73
2024-07-26	vsh	NF	no factor from 2^72 to 2^73
2024-05-28	vsh	NF-PM1	B1=10000000, B2=20013932400
2024-05-22	vsh	NF-PM1	B1=5000000, B2=11282028450
2024-04-08	vsh	NF-PM1	B1=2150000, B2=1215747390
2021-10-30	SRBase	NF	no factor from 2^71 to 2^72
2021-08-15	SRBase	NF	no factor from 2^70 to 2^71
2021-08-06	SRBase	NF	no factor from 2^69 to 2^70
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
2017-06-05	storm5510	C-LL	3411F2A5102217F4
2015-12-28	VictordeHollander	NF	no factor from 2^66 to 2^67
2015-03-14	Numberwang	NF	no factor from 2^65 to 2^66
2013-11-23	lycorn	NF	no factor from 2^64 to 2^65
2012-05-15	James Heinrich	NF-PM1	B1=215000, B2=5160000, E=6