138 784 123 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 =	1181000
B2 =	1276426470

Status	Proof	Date	User	Residue	Shift	Type	Base
Verified	Certified Good Power=9	2025-11-21	Kriesel	E02AEB293CAA3571	62108915	1	3

History

Date	User	Type	Result
2025-11-21	Thure Duehrsen	CERT	Proof certified good
2025-11-21	Kriesel	C-PRP	Proof Certified Good Proof Power: 9
2024-09-21	Luke Durant	NF-PM1	B1=1181000, B2=1276426470
2024-08-05	Luke Durant	NF	no factor TF: 76-77
2024-07-17	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
2020-11-23	SRBase	NF	no factor TF: 72-73
2017-02-12	SourceBinary.com	NF	no factor TF: 71-72
2017-02-11	guru	NF	no factor TF: 70-71
2017-02-10	proxy2222	NF	no factor TF: 69-70
2017-02-10	proxy2222	NF	no factor TF: 68-69
2016-03-02	dbaugh	NF	no factor TF: 67-68
2015-02-01	el grocco	NF	no factor TF: 66-67
2012-11-19	sannerud.com	NF	no factor TF: 65-66
2010-12-04	Mr-Plonk	NF	no factor TF: 64-65
2010-06-12	sasaki3	NF	no factor TF: 63-64