142 248 283 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 =	1229000
B2 =	1464137070

Assigned

Assigned	User	Work Type	Stage	% Done	Updated	Expired
2025-06-30	-Anonymous-	PRP test		0.00 %	2025-06-30

History

Date	User	Type	Result
2024-10-02	Luke Durant	NF-PM1	B1=1229000, B2=1464137070
2024-09-24	Ryan Propper	NF	no factor from 2^76 to 2^77
2024-07-17	SRBase	NF	no factor from 2^75 to 2^76
2023-01-21	SRBase	NF	no factor from 2^74 to 2^75
2021-11-06	SRBase	NF	no factor from 2^73 to 2^74
2016-12-06	nranks	NF	no factor from 2^72 to 2^73
2016-12-06	nranks	NF	no factor from 2^71 to 2^72
2016-12-06	nranks	NF	no factor from 2^70 to 2^71
2016-12-06	nranks	NF	no factor from 2^69 to 2^70
2016-06-05	Choi4KANG	NF	no factor from 2^68 to 2^69
2016-03-25	dbaugh	NF	no factor from 2^67 to 2^68
2015-02-23	aurashift	NF	no factor from 2^66 to 2^67
2012-12-09	Arne Kleppestrand	NF	no factor from 2^65 to 2^66
2010-12-19	Richard	NF	no factor from 2^64 to 2^65
2010-06-16	sasaki3	NF	no factor from 2^63 to 2^64