141 638 507 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 =	834000
B2 =	84411180

Status	Date	User	Residue	Shift	Type	Base
Verified	2025-04-17	colossalfossil	C970EA59865B2005	127002180	1	3

History

Date	User	Type	Result
2025-04-17	Jonathan Webb	CERT	PRP Certification CERT proof power = 8 Proof certified good
2025-04-17	colossalfossil	C-PRP	C970EA59865B2005 PRP proof power = 8 PRP: Verified Proof certified good
2024-10-03	Ryan Propper	NF-PM1	B1=834000, B2=84411180
2024-09-03	Luke Durant	NF	no factor from 2^76 to 2^77
2024-07-16	SRBase	NF	no factor from 2^75 to 2^76
2024-05-06	Greg	NF	no factor from 2^68 to 2^69
2023-01-29	SRBase	NF	no factor from 2^74 to 2^75
2016-04-16	taffa	NF	no factor from 2^73 to 2^74
2016-04-16	taffa	NF	no factor from 2^72 to 2^73
2016-04-16	taffa	NF	no factor from 2^71 to 2^72
2016-04-15	-Anonymous-	NF	no factor from 2^70 to 2^71
2016-04-09	neocpp	NF	no factor from 2^69 to 2^70
2016-04-08	Josh Famestad	NF	no factor from 2^68 to 2^69
2016-03-25	dbaugh	NF	no factor from 2^67 to 2^68
2015-02-20	Thomas Stork	NF	no factor from 2^66 to 2^67
2012-12-05	sasaki3	NF	no factor from 2^65 to 2^66
2010-12-14	zyg	NF	no factor from 2^64 to 2^65
2010-06-15	Mr-Plonk	NF	no factor from 2^63 to 2^64