137 428 897 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 =	676000
B2 =	31127040

Status	Proof	Date	User	Residue	Shift	Type	Base
Verified	Certified Good Power=9	2025-02-18	ky0uraku	09600E1F7CF2AD52	71903075	1	3

History

Date	User	Type	Result
2025-02-18	Massimo Cappelli (ik5pwa)	CERT	Proof certified good
2025-02-18	ky0uraku	C-PRP	Proof Certified Good Proof Power: 9
2024-09-17	Ryan Propper	NF-PM1	B1=676000, B2=31127040
2024-07-20	minikv116	NF	no factor TF: 76-77
2024-07-08	JacobZ	NF	no factor TF: 75-76
2023-01-15	SRBase	NF	no factor TF: 74-75
2021-07-31	SRBase	NF	no factor TF: 73-74
2020-10-27	SRBase	NF	no factor TF: 72-73
2016-02-26	Ready4PrimeTime	NF	no factor TF: 71-72
2016-02-13	dbaugh	NF	no factor TF: 70-71
2015-01-03	La Güira	NF	no factor TF: 69-70
2015-01-03	La Güira	NF	no factor TF: 68-69
2010-12-03	Michael C	NF	no factor TF: 64-68
2010-06-11	oodaira	NF	no factor TF: 63-64