138 512 911 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 =	1172000
B2 =	1188831930

Status	Proof	Date	User	Residue	Shift	Type	Base
Verified	Certified Good Power=8	2025-10-16	Angelino Desmet	054E328D00E51A96	3643045	1	3

History

Date	User	Type	Result
2025-10-18	Ken	CERT	Proof certified good
2025-10-16	Angelino Desmet	C-PRP	054E328D00E51A96 Proof Certified Good Proof Power: 8
2024-09-20	Luke Durant	NF-PM1	B1=1172000, B2=1188831930
2024-07-29	Richard	NF	no factor TF: 76-77
2024-07-12	SRBase	NF	no factor TF: 75-76
2023-01-15	SRBase	NF	no factor TF: 74-75
2021-08-02	SRBase	NF	no factor TF: 73-74
2020-11-22	SRBase	NF	no factor TF: 72-73
2016-09-19	Derek	NF	no factor TF: 71-72
2016-09-19	Smok_bmv	NF	no factor TF: 70-71
2016-09-11	Adam Buran	NF	no factor TF: 69-70
2016-03-10	dbaugh	NF	no factor TF: 68-69
2016-02-16	GustavEbbers	NF	no factor TF: 67-68
2015-02-08	Mr-Plonk	NF	no factor TF: 66-67
2012-11-18	sasaki3	NF	no factor TF: 65-66
2010-12-06	Richard	NF	no factor TF: 64-65
2010-06-12	Charles A. Morris	NF	no factor TF: 63-64