128 455 189 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

No known factors, not tested for primality

TF

No factors below 2⁷⁷

TF target 2⁷⁷

P-1

B1 =	966000
B2 =	442412250

Assigned

Assigned	User	Work Type	Stage	% Done	Updated	Expired
2025-01-11	LookAS	PRP test	PRP	54.12 %	2025-01-15

History

Date	User	Type	Result
2025-01-11	linear	NF-PM1	B1=966000, B2=442412250
2023-01-16	onlinegame	NF	no factor from 2^76 to 2^77
2023-01-16	Kevin Jaget	NF	no factor from 2^75 to 2^76
2022-12-25	SRBase	NF	no factor from 2^74 to 2^75
2021-07-15	SRBase	NF	no factor from 2^73 to 2^74
2020-10-20	SRBase	NF	no factor from 2^72 to 2^73
2015-11-26	qwertyuio999	NF	no factor from 2^71 to 2^72
2015-11-18	Judge	NF	no factor from 2^70 to 2^71
2015-11-13	La Güira	NF	no factor from 2^69 to 2^70
2015-11-13	La Güira	NF	no factor from 2^68 to 2^69
2015-11-13	La Güira	NF	no factor from 2^67 to 2^68
2015-01-14	el grocco	NF	no factor from 2^66 to 2^67
2012-09-29	ALS	NF	no factor from 2^65 to 2^66
2010-11-07	Torchwood Institute	NF	no factor from 2^64 to 2^65
2010-05-29	-Anonymous-	NF	no factor from 2^63 to 2^64