131 111 881 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 =	1058000
B2 =	765536310

Status	Date	User	Residue	Shift	Type	Base
Verified	2024-09-09	Luke Durant	07C6665570A7E77E	0	1	3

History

Date	User	Type	Result
2024-09-09	knue	CERT	PRP Certification CERT proof power = 9 Proof certified good
2024-09-09	Luke Durant	C-PRP	07C6665570A7E77E PRP proof power = 9 PRP: Verified Proof certified good
2024-08-17	Luke Durant	NF-PM1	B1=1058000, B2=765536310
2023-06-23	Signals	NF	no factor from 2^76 to 2^77
2023-02-23	A Cuneo	NF	no factor from 2^75 to 2^76
2022-12-27	SRBase	NF	no factor from 2^74 to 2^75
2021-07-27	SRBase	NF	no factor from 2^73 to 2^74
2021-05-28	ViliamF	NF	no factor from 2^70 to 2^71
2020-10-20	SRBase	NF	no factor from 2^72 to 2^73
2015-12-05	SourceBinary.com	NF	no factor from 2^71 to 2^72
2015-12-01	Josh Famestad	NF	no factor from 2^70 to 2^71
2012-12-17	VictordeHollander	NF	no factor from 2^69 to 2^70
2012-08-27	Bio1ogics	NF	no factor from 2^68 to 2^69
2012-08-27	Bio1ogics	NF	no factor from 2^66 to 2^68
2011-04-10	Rob_Dee	NF	no factor from 2^65 to 2^66
2010-11-14	Ali	NF	no factor from 2^64 to 2^65
2010-06-02	Torchwood Institute	NF	no factor from 2^63 to 2^64