131 696 911 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite: proven not-prime with PRP test

No factors below 2⁷⁷

TF target 2⁷⁷

P-1

B1 =	2000000
B2 =	1542849000

Status	Proof	Date	User	Residue	Shift	Type	Base
Verified	Certified Good Power=9	2024-09-17	Luke Durant	18667CA26999003C	0	1	3
Verified	Certified Good Power=8	2025-01-04	EvgenyK	18667CA26999003C	4456618	1	3

History

Date	User	Type	Result
2025-01-04	LOBES	CERT	Proof certified good
2025-01-04	EvgenyK	C-PRP	18667CA26999003C Proof Certified Good Proof Power: 8
2024-09-17	Yoon	CERT	Proof certified good
2024-09-17	Luke Durant	C-PRP	18667CA26999003C Proof Certified Good Proof Power: 9
2024-06-05	Luke Durant	NF-PM1	B1=2000000, B2=1542849000
2023-07-31	Noodles	NF	no factor TF: 76-77
2023-07-24	ZbiG	NF	no factor TF: 75-76
2022-12-30	SRBase	NF	no factor TF: 74-75
2021-07-20	SRBase	NF	no factor TF: 73-74
2020-10-22	SRBase	NF	no factor TF: 72-73
2015-12-27	only1nrs	NF	no factor TF: 71-72
2015-12-13	saffa	NF	no factor TF: 70-71
2013-01-21	VictordeHollander	NF	no factor TF: 69-70
2012-09-30	VictordeHollander	NF	no factor TF: 68-69
2012-09-30	VictordeHollander	NF	no factor TF: 65-68
2010-11-16	Richard	NF	no factor TF: 64-65
2010-06-10	EPF	NF	no factor TF: 63-64