141 740 531 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 =	1221000
B2 =	1401568740

Status	Date	User	Residue	Shift	Type	Base
Verified	2025-04-24	curtisc	FB49E5CF2F0552A4	115997542	1	3

History

Date	User	Type	Result
2025-04-24	REThern	CERT	PRP Certification CERT proof power = 8 Proof certified good
2025-04-24	curtisc	C-PRP	FB49E5CF2F0552A4 PRP proof power = 8 PRP: Verified Proof certified good
2024-09-30	Luke Durant	NF-PM1	B1=1221000, B2=1401568740
2024-09-05	Luke Durant	NF	no factor from 2^76 to 2^77
2024-07-16	SRBase	NF	no factor from 2^75 to 2^76
2023-01-29	SRBase	NF	no factor from 2^74 to 2^75
2021-11-06	SRBase	NF	no factor from 2^73 to 2^74
2020-10-25	SRBase	NF	no factor from 2^72 to 2^73
2017-04-28	d3zorg	NF	no factor from 2^71 to 2^72
2017-04-26	megavink	NF	no factor from 2^70 to 2^71
2017-02-09	JoDu	NF	no factor from 2^69 to 2^70
2017-02-05	JoDu	NF	no factor from 2^68 to 2^69
2016-03-25	dbaugh	NF	no factor from 2^67 to 2^68
2015-04-06	tjaehnsi	NF	no factor from 2^66 to 2^67
2012-12-06	tsc	NF	no factor from 2^65 to 2^66
2010-12-15	oodaira	NF	no factor from 2^64 to 2^65
2010-06-15	Charles A. Morris	NF	no factor from 2^63 to 2^64