142 351 031 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

No known factors, not tested for primality

No factors below 2⁷⁷

TF target 2⁷⁷

Assignments

Assigned	User	Work Type	Stage	% Done	Updated	Est Complete	Expired
2026-08-30	Will K	PRP	PRP	80.85 %	2026-10-25	2026-11-01

P-1

B1 =	1209000
B2 =	1300095060

History

Date	User	Type	Result
2024-10-04	Luke Durant	NF-PM1	B1=1209000, B2=1300095060
2024-10-04	Feritin	NF	no factor TF: 76-77
2024-07-17	SRBase	NF	no factor TF: 75-76
2023-01-23	SRBase	NF	no factor TF: 74-75
2021-11-07	SRBase	NF	no factor TF: 73-74
2020-10-25	SRBase	NF	no factor TF: 72-73
2016-07-28	Mihai Preda	NF	no factor TF: 71-72
2016-07-02	Mihai Preda	NF	no factor TF: 70-71
2016-06-12	Mihai Preda	NF	no factor TF: 69-70
2016-06-05	Choi4KANG	NF	no factor TF: 68-69
2016-03-25	dbaugh	NF	no factor TF: 67-68
2015-02-24	Schultz7676	NF	no factor TF: 66-67
2012-12-09	sasaki3	NF	no factor TF: 65-66
2010-12-19	Richard	NF	no factor TF: 64-65
2010-06-16	Mr-Plonk	NF	no factor TF: 63-64