137 235 887 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 =	1172000
B2 =	1313968590

Status	Date	User	Residue	Shift	Type	Base
Verified	2025-01-14	Chun sung soo	3498DF1D8EC18DFF	51421394	1	3

History

Date	User	Type	Result
2025-01-14	Torchwood Institute	CERT	PRP Certification CERT proof power = 8 Proof certified good
2025-01-14	Chun sung soo	C-PRP	3498DF1D8EC18DFF PRP proof power = 8 PRP: Verified Proof certified good
2024-10-04	Luke Durant	NF-PM1	B1=1172000, B2=1313968590
2024-09-29	Architects Cubed	NF	no factor from 2^76 to 2^77
2024-08-04	JacobZ	NF	no factor from 2^75 to 2^76
2023-01-11	SRBase	NF	no factor from 2^74 to 2^75
2021-08-04	SRBase	NF	no factor from 2^73 to 2^74
2020-10-26	SRBase	NF	no factor from 2^72 to 2^73
2016-09-20	neocpp	NF	no factor from 2^71 to 2^72
2016-09-13	neocpp	NF	no factor from 2^70 to 2^71
2016-09-02	Mihai Preda	NF	no factor from 2^69 to 2^70
2016-02-23	SourceBinary.com	NF	no factor from 2^68 to 2^69
2016-02-19	dbaugh	NF	no factor from 2^67 to 2^68
2015-02-03	tsc	NF	no factor from 2^66 to 2^67
2012-11-11	oodaira	NF	no factor from 2^65 to 2^66
2010-11-30	-Anonymous-	NF	no factor from 2^64 to 2^65
2010-06-10	subgenius	NF	no factor from 2^63 to 2^64