140 041 081 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 =	1201000
B2 =	1345255560

Status	Date	User	Residue	Shift	Type	Base
Verified	2025-09-13	q64	2A56A274B44E6F2E	0	1	3

History

Date	User	Type	Result
2025-09-13	Kriesel	CERT	PRP Certification CERT proof power = 10 Proof certified good
2025-09-13	q64	C-PRP	2A56A274B44E6F2E PRP proof power = 10 PRP: Verified Proof certified good
2024-09-25	Luke Durant	NF-PM1	B1=1201000, B2=1345255560
2024-08-21	Luke Durant	NF	no factor from 2^76 to 2^77
2024-06-01	James Heinrich	NF	no factor from 2^70 to 2^71
2023-08-27	tsc	NF	no factor from 2^75 to 2^76
2023-01-21	SRBase	NF	no factor from 2^74 to 2^75
2021-10-31	SRBase	NF	no factor from 2^73 to 2^74
2020-10-25	SRBase	NF	no factor from 2^72 to 2^73
2016-09-19	EPF	NF	no factor from 2^71 to 2^72
2016-09-07	Conductor	NF	no factor from 2^70 to 2^71
2015-05-04	Judge Hale	NF	no factor from 2^69 to 2^70
2015-05-04	Judge Hale	NF	no factor from 2^68 to 2^69
2015-05-04	Judge Hale	NF	no factor from 2^67 to 2^68
2015-02-13	HBendtz	NF	no factor from 2^66 to 2^67
2012-11-26	Le Comte	NF	no factor from 2^65 to 2^66
2010-12-11	Richard	NF	no factor from 2^64 to 2^65
2010-06-14	Charles A. Morris	NF	no factor from 2^63 to 2^64