137 407 397 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	2025-02-15	Samuel Schmidt	561C801A1BD02819	89637531	1	3

History

Date	User	Type	Result
2025-02-16	Massimo Cappelli (ik5pwa)	CERT	Proof certified good
2025-02-15	Samuel Schmidt	C-PRP	561C801A1BD02819 Proof Certified Good Proof Power: 9
2024-09-18	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
2023-01-12	SRBase	NF	no factor TF: 74-75
2021-07-31	SRBase	NF	no factor TF: 73-74
2020-10-22	SRBase	NF	no factor TF: 72-73
2016-02-20	Earle Lowe	NF	no factor TF: 71-72
2016-02-19	guru	NF	no factor TF: 70-71
2016-02-19	guru	NF	no factor TF: 69-70
2016-02-19	guru	NF	no factor TF: 68-69
2016-02-19	guru	NF	no factor TF: 67-68
2015-02-03	tsc	NF	no factor TF: 66-67
2012-11-14	Richard	NF	no factor TF: 65-66
2010-11-30	sasaki3	NF	no factor TF: 64-65
2010-06-10	Mr-Plonk	NF	no factor TF: 63-64