139 381 577 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 =	682000
B2 =	31914750

Status	Proof	Date	User	Residue	Shift	Type	Base
Verified	Certified Good Power=8	2025-03-22	Conductor	7AC97F318D79A5FA	109102276	1	3

History

Date	User	Type	Result
2025-03-23	Manfred_Bruder_01-05-1988_DE	CERT	Proof certified good
2025-03-22	Conductor	C-PRP	Proof Certified Good Proof Power: 8
2024-09-23	Ryan Propper	NF-PM1	B1=682000, B2=31914750
2024-07-08	Luke Durant	NF	no factor TF: 76-77
2024-05-06	Greg	NF	no factor TF: 70-71
2023-12-23	Oliver Kruse	NF	no factor TF: 75-76
2023-01-16	SRBase	NF	no factor TF: 74-75
2021-08-03	SRBase	NF	no factor TF: 73-74
2020-10-23	SRBase	NF	no factor TF: 72-73
2016-04-08	Summy	NF	no factor TF: 71-72
2016-04-07	Josh Famestad	NF	no factor TF: 70-71
2016-03-31	dbaugh	NF	no factor TF: 69-70
2016-02-26	Ready4PrimeTime	NF	no factor TF: 68-69
2016-02-18	GustavEbbers	NF	no factor TF: 67-68
2015-02-11	subgenius	NF	no factor TF: 66-67
2012-11-28	Richard	NF	no factor TF: 65-66
2010-12-06	Thomas Stork	NF	no factor TF: 64-65
2010-06-13	rabbut	NF	no factor TF: 63-64