140 328 707 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 =	776000
B2 =	59469930

Status	Date	User	Residue	Shift	Type	Base
Verified	2025-07-22	sveng101	CACB2A912F2984C4	114978497	1	3

History

Date	User	Type	Result
2025-07-22	Poao	CERT	PRP Certification CERT proof power = 8 Proof certified good
2025-07-22	sveng101	C-PRP	CACB2A912F2984C4 PRP proof power = 8 PRP: Verified Proof certified good
2024-10-01	Smok_bmv	NF-PM1	B1=776000, B2=59469930
2024-08-30	Ryan Propper	NF	no factor from 2^76 to 2^77
2023-11-29	tsc	NF	no factor from 2^75 to 2^76
2023-01-19	SRBase	NF	no factor from 2^74 to 2^75
2021-11-02	SRBase	NF	no factor from 2^73 to 2^74
2020-10-25	SRBase	NF	no factor from 2^72 to 2^73
2016-03-25	wombatman	NF	no factor from 2^71 to 2^72
2016-03-23	Ready4PrimeTime	NF	no factor from 2^70 to 2^71
2015-05-08	Judge Hale	NF	no factor from 2^69 to 2^70
2015-05-08	Judge Hale	NF	no factor from 2^68 to 2^69
2015-05-08	Judge Hale	NF	no factor from 2^67 to 2^68
2015-02-14	vwflat4	NF	no factor from 2^66 to 2^67
2012-11-30	Richard	NF	no factor from 2^65 to 2^66
2010-12-10	Thomas Stork	NF	no factor from 2^64 to 2^65
2010-06-14	Charles A. Morris	NF	no factor from 2^63 to 2^64