131 867 179 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 PRP test

TF

No factors below 2⁷⁷

TF target 2⁷⁷

P-1

B1 =	991000
B2 =	446346390

Status	Date	User	Residue	Shift	Type	Base
Verified	2024-10-10	Luke Durant	6307A45A1B26EE4C	0	1	3

History

Date	User	Type	Result
2024-10-10	Macieja	CERT	PRP Certification CERT proof power = 9 Proof certified good
2024-10-10	Luke Durant	C-PRP	6307A45A1B26EE4C PRP proof power = 9 PRP: Verified Proof certified good
2024-04-23	Luke Durant	NF-PM1	B1=991000, B2=446346390
2023-03-24	Chuck	NF	no factor from 2^76 to 2^77
2023-03-20	theojk	NF	no factor from 2^75 to 2^76
2022-12-27	SRBase	NF	no factor from 2^74 to 2^75
2021-07-20	SRBase	NF	no factor from 2^73 to 2^74
2020-11-23	SRBase	NF	no factor from 2^72 to 2^73
2016-01-10	PascalBieri	NF	no factor from 2^71 to 2^72
2015-12-26	PascalBieri	NF	no factor from 2^70 to 2^71
2013-01-26	VictordeHollander	NF	no factor from 2^69 to 2^70
2012-09-30	VictordeHollander	NF	no factor from 2^68 to 2^69
2012-09-30	VictordeHollander	NF	no factor from 2^65 to 2^68
2010-11-15	Torchwood Institute	NF	no factor from 2^64 to 2^65
2010-06-03	Mr-Plonk	NF	no factor from 2^63 to 2^64