139 895 267 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 =	1177000
B2 =	1245145110

Status	Date	User	Residue	Shift	Type	Base
Verified	2025-09-14	curtisc	408C34A2716EF4DF	65573766	1	3

History

Date	User	Type	Result
2025-09-15	ike	CERT	PRP Certification CERT proof power = 8 Proof certified good
2025-09-14	curtisc	C-PRP	408C34A2716EF4DF PRP proof power = 8 PRP: Verified Proof certified good
2024-09-24	Luke Durant	NF-PM1	B1=1177000, B2=1245145110
2024-08-19	E.C.K@slingshot.co.nz	NF	no factor from 2^76 to 2^77
2024-07-29	SRBase	NF	no factor from 2^75 to 2^76
2024-07-10	Joe S.	NF	no factor from 2^69 to 2^70
2024-07-10	Joe S.	NF	no factor from 2^68 to 2^69
2023-01-18	SRBase	NF	no factor from 2^74 to 2^75
2021-08-03	SRBase	NF	no factor from 2^73 to 2^74
2020-10-23	SRBase	NF	no factor from 2^72 to 2^73
2016-09-08	nate.anders	NF	no factor from 2^71 to 2^72
2016-09-07	nate.anders	NF	no factor from 2^70 to 2^71
2016-09-02	Derek	NF	no factor from 2^69 to 2^70
2016-09-02	Derek	NF	no factor from 2^68 to 2^69
2016-07-08	proxy2222	NF	no factor from 2^67 to 2^68
2015-02-13	Andrew B	NF	no factor from 2^66 to 2^67
2012-11-26	bdani	NF	no factor from 2^65 to 2^66
2010-12-09	Richard	NF	no factor from 2^64 to 2^65
2010-06-13	Saksa Heikki	NF	no factor from 2^63 to 2^64