139 975 657 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 =	1191000
B2 =	1339000410

Status	Date	User	Residue	Shift	Type	Base
Verified	2025-09-28	curtisc	41A6D4CAF382ABDD	91423153	1	3

History

Date	User	Type	Result
2025-09-28	Gnarwhals	CERT	PRP Certification CERT proof power = 8 Proof certified good
2025-09-28	curtisc	C-PRP	41A6D4CAF382ABDD PRP proof power = 8 PRP: Verified Proof certified good
2024-09-25	Luke Durant	NF-PM1	B1=1191000, B2=1339000410
2024-07-15	Luke Durant	NF	no factor from 2^76 to 2^77
2024-07-11	Luke Durant	NF	no factor from 2^75 to 2^76
2023-01-18	SRBase	NF	no factor from 2^74 to 2^75
2021-09-17	Neutron3529	NF	no factor from 2^73 to 2^74
2021-09-07	LordJulius	NF	no factor from 2^1 to 2^63
2020-10-27	SRBase	NF	no factor from 2^72 to 2^73
2017-02-05	SourceBinary.com	NF	no factor from 2^71 to 2^72
2017-02-04	proxy2222	NF	no factor from 2^70 to 2^71
2016-08-31	Derek	NF	no factor from 2^69 to 2^70
2016-08-31	Derek	NF	no factor from 2^68 to 2^69
2016-08-17	vwflat4	NF	no factor from 2^67 to 2^68
2015-02-12	vwflat4	NF	no factor from 2^66 to 2^67
2012-11-26	-Anonymous-	NF	no factor from 2^65 to 2^66
2010-12-08	sasaki3	NF	no factor from 2^64 to 2^65
2010-06-13	oodaira	NF	no factor from 2^63 to 2^64