138 745 291 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 =	1180000
B2 =	1313968590

Status	Date	User	Residue	Shift	Type	Base
Verified	2025-09-15	curtisc	EE3C288FA7393439	53666338	1	3

History

Date	User	Type	Result
2025-09-15	Fabrice Bellet	CERT	PRP Certification CERT proof power = 8 Proof certified good
2025-09-15	curtisc	C-PRP	EE3C288FA7393439 PRP proof power = 8 PRP: Verified Proof certified good
2024-09-22	Luke Durant	NF-PM1	B1=1180000, B2=1313968590
2024-08-02	Richard	NF	no factor from 2^76 to 2^77
2024-07-17	SRBase	NF	no factor from 2^75 to 2^76
2023-01-15	SRBase	NF	no factor from 2^74 to 2^75
2021-08-05	SRBase	NF	no factor from 2^73 to 2^74
2020-11-13	SRBase	NF	no factor from 2^72 to 2^73
2017-02-09	SourceBinary.com	NF	no factor from 2^71 to 2^72
2017-02-08	SourceBinary.com	NF	no factor from 2^70 to 2^71
2017-02-07	proxy2222	NF	no factor from 2^69 to 2^70
2017-02-07	proxy2222	NF	no factor from 2^68 to 2^69
2016-03-02	dbaugh	NF	no factor from 2^67 to 2^68
2015-01-31	el grocco	NF	no factor from 2^66 to 2^67
2012-11-19	tsc	NF	no factor from 2^65 to 2^66
2010-12-04	-Anonymous-	NF	no factor from 2^64 to 2^65
2010-06-12	James Hintz	NF	no factor from 2^63 to 2^64