139 627 021 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 =	1199000
B2 =	1376542530

Status	Date	User	Residue	Shift	Type	Base
Verified	2025-08-24	curtisc	ED4798538BC736D0	47589338	1	3

History

Date	User	Type	Result
2025-08-25	Massimo Cappelli (ik5pwa)	CERT	PRP Certification CERT proof power = 8 Proof certified good
2025-08-24	curtisc	C-PRP	ED4798538BC736D0 PRP proof power = 8 PRP: Verified Proof certified good
2024-09-23	Luke Durant	NF-PM1	B1=1199000, B2=1376542530
2024-08-19	ihnl	NF	no factor from 2^76 to 2^77
2024-07-29	Wentao Huang	NF	no factor from 2^69 to 2^70
2024-07-29	Wentao Huang	NF	no factor from 2^68 to 2^69
2024-07-16	SRBase	NF	no factor from 2^75 to 2^76
2023-01-18	SRBase	NF	no factor from 2^74 to 2^75
2021-08-03	SRBase	NF	no factor from 2^73 to 2^74
2020-10-23	SRBase	NF	no factor from 2^72 to 2^73
2016-09-01	JMGarcia	NF	no factor from 2^71 to 2^72
2016-09-01	Smok_bmv	NF	no factor from 2^70 to 2^71
2016-08-24	Derek	NF	no factor from 2^69 to 2^70
2016-08-24	Derek	NF	no factor from 2^68 to 2^69
2016-05-03	proxy2222	NF	no factor from 2^67 to 2^68
2015-02-12	el grocco	NF	no factor from 2^66 to 2^67
2012-11-26	Richard	NF	no factor from 2^65 to 2^66
2010-12-08	Richard	NF	no factor from 2^64 to 2^65
2010-06-13	Torchwood Institute	NF	no factor from 2^63 to 2^64