138 575 509 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Details

Composite: proven not-prime with PRP test

No factors below 2⁷⁷

TF target 2⁷⁷

P-1

B1 =	685000
B2 =	31584420

Status	Proof	Date	User	Residue	Shift	Type	Base
Verified	Certified Good Power=8	2025-01-02	Dmitry Bolshakov	66341951C7A58A51	0	1	3

History

Date	User	Type	Result
2025-01-03	Asriel	CERT	Proof certified good
2025-01-02	Dmitry Bolshakov	C-PRP	66341951C7A58A51 Proof Certified Good Proof Power: 8
2024-09-21	Ryan Propper	NF-PM1	B1=685000, B2=31584420
2024-07-09	Luke Durant	NF	no factor TF: 76-77
2024-07-04	Feritin	NF	no factor TF: 75-76
2024-05-06	Greg	NF	no factor TF: 68-69
2023-01-13	SRBase	NF	no factor TF: 74-75
2021-08-02	SRBase	NF	no factor TF: 73-74
2020-11-23	SRBase	NF	no factor TF: 72-73
2016-04-06	Smok_bmv	NF	no factor TF: 71-72
2016-04-04	Smok_bmv	NF	no factor TF: 70-71
2016-03-31	Josh Famestad	NF	no factor TF: 69-70
2016-03-11	Josh Famestad	NF	no factor TF: 68-69
2016-03-02	dbaugh	NF	no factor TF: 67-68
2015-02-10	el grocco	NF	no factor TF: 66-67
2012-11-18	Andrew B	NF	no factor TF: 65-66
2010-12-03	-anonymous-	NF	no factor TF: 64-65
2010-06-12	Torchwood Institute	NF	no factor TF: 63-64