142 166 327 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 =	792000
B2 =	83011320

Status	Date	User	Residue	Shift	Type	Base
Verified	2025-07-23	curtisc	06BCBB350BAAFBE0	41114482	1	3

History

Date	User	Type	Result
2025-07-23	Schwa	CERT	PRP Certification CERT proof power = 8 Proof certified good
2025-07-23	curtisc	C-PRP	06BCBB350BAAFBE0 PRP proof power = 8 PRP: Verified Proof certified good
2024-10-03	Ryan Propper	NF-PM1	B1=792000, B2=83011320
2024-09-19	StefanSku	NF	no factor from 2^76 to 2^77
2024-07-19	SRBase	NF	no factor from 2^75 to 2^76
2023-01-23	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
2016-06-01	Ilya Alexandrov	NF	no factor from 2^71 to 2^72
2016-06-01	Ilya Alexandrov	NF	no factor from 2^70 to 2^71
2016-06-01	Ilya Alexandrov	NF	no factor from 2^69 to 2^70
2016-05-29	Choi4KANG	NF	no factor from 2^68 to 2^69
2016-03-25	dbaugh	NF	no factor from 2^67 to 2^68
2015-03-10	Richard	NF	no factor from 2^66 to 2^67
2012-12-08	tsc	NF	no factor from 2^65 to 2^66
2010-12-16	sasaki3	NF	no factor from 2^64 to 2^65
2010-06-16	Charles A. Morris	NF	no factor from 2^63 to 2^64