138 037 997 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Composite: proven not-prime with PRP test

TF

No factors below 2⁷⁷

TF target 2⁷⁷

P-1

B1 =	676000
B2 =	31660650

Status	Date	User	Residue	Shift	Type	Base
Verified	2025-05-19	George Woltman	444D39B2FE80D1C3	0	1	3

History

Date	User	Type	Result
2025-05-19	ZhiYuan	CERT	PRP Certification CERT proof power = 10 Proof certified good
2025-05-19	George Woltman	C-PRP	444D39B2FE80D1C3 PRP proof power = 10 PRP: Verified Proof certified good
2024-09-19	Ryan Propper	NF-PM1	B1=676000, B2=31660650
2024-07-29	Luke Durant	NF	no factor from 2^76 to 2^77
2024-07-14	SRBase	NF	no factor from 2^75 to 2^76
2023-01-21	SRBase	NF	no factor from 2^74 to 2^75
2021-08-02	SRBase	NF	no factor from 2^73 to 2^74
2020-10-28	SRBase	NF	no factor from 2^72 to 2^73
2016-03-17	Ready4PrimeTime	NF	no factor from 2^71 to 2^72
2016-02-24	Ready4PrimeTime	NF	no factor from 2^70 to 2^71
2014-12-28	La Güira	NF	no factor from 2^69 to 2^70
2014-12-28	La Güira	NF	no factor from 2^68 to 2^69
2014-12-28	La Güira	NF	no factor from 2^67 to 2^68
2014-12-12	snme2pm1	NF	no factor from 2^66 to 2^67
2012-11-15	subgenius	NF	no factor from 2^65 to 2^66
2010-12-10	Tha	NF	no factor from 2^64 to 2^65
2010-06-21	Richard	NF	no factor from 2^63 to 2^64