137 520 401 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 =	31393950

Status	Proof	Date	User	Residue	Shift	Type	Base
Verified	Certified Good Power=9	2025-03-13	ky0uraku	613653B666A539B1	45118935	1	3

History

Date	User	Type	Result
2025-03-14	Marcin	CERT	Proof certified good
2025-03-13	ky0uraku	C-PRP	Proof Certified Good Proof Power: 9
2024-09-18	Ryan Propper	NF-PM1	B1=676000, B2=31393950
2024-07-22	Luke Durant	NF	no factor TF: 76-77
2024-07-14	SRBase	NF	no factor TF: 75-76
2023-01-12	SRBase	NF	no factor TF: 74-75
2021-08-02	SRBase	NF	no factor TF: 73-74
2020-10-22	SRBase	NF	no factor TF: 72-73
2016-03-04	SourceBinary.com	NF	no factor TF: 71-72
2016-02-29	guru	NF	no factor TF: 70-71
2016-02-29	guru	NF	no factor TF: 69-70
2016-02-25	Ready4PrimeTime	NF	no factor TF: 68-69
2016-02-23	dbaugh	NF	no factor TF: 67-68
2015-02-04	vwflat4	NF	no factor TF: 66-67
2012-11-12	sasaki3	NF	no factor TF: 65-66
2010-12-01	Michael C	NF	no factor TF: 64-65
2010-06-11	carlos56	NF	no factor TF: 63-64