131 838 607 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	2024-09-18	Luke Durant	3B760A6A03AEB9EF	0	1	3

History

Date	User	Type	Result
2024-09-19	EthanD	CERT	PRP Certification CERT proof power = 8 Proof certified good
2024-09-18	Luke Durant	C-PRP	3B760A6A03AEB9EF PRP proof power = 8 PRP: Verified Proof certified good
2024-08-20	Luke Durant	NF-PM1	B1=1058000, B2=765536310
2023-04-11	Chuck	NF	no factor from 2^76 to 2^77
2023-03-24	A Cuneo	NF	no factor from 2^75 to 2^76
2023-01-02	SRBase	NF	no factor from 2^74 to 2^75
2021-07-23	SRBase	NF	no factor from 2^73 to 2^74
2020-10-22	SRBase	NF	no factor from 2^72 to 2^73
2015-12-15	SourceBinary.com	NF	no factor from 2^71 to 2^72
2015-12-08	SourceBinary.com	NF	no factor from 2^70 to 2^71
2013-01-23	VictordeHollander	NF	no factor from 2^69 to 2^70
2012-12-05	VictordeHollander	NF	no factor from 2^68 to 2^69
2012-12-05	VictordeHollander	NF	no factor from 2^65 to 2^68
2010-11-15	sasaki3	NF	no factor from 2^64 to 2^65
2010-06-03	Ali	NF	no factor from 2^63 to 2^64