138 952 903 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 =	682000
B2 =	31914750

Status	Date	User	Residue	Shift	Type	Base
Verified	2025-08-16	Dr Mamdouh Barakat on MBAi Cloud	7AF2E5FCDF502517	44970417	1	3

History

Date	User	Type	Result
2025-08-18	0x	CERT	PRP Certification CERT proof power = 8 Proof certified good
2025-08-16	Dr Mamdouh Barakat on MBAi Cloud	C-PRP	7AF2E5FCDF502517 PRP proof power = 8 PRP: Verified Proof certified good
2024-09-22	Ryan Propper	NF-PM1	B1=682000, B2=31914750
2024-08-07	Luke Durant	NF	no factor from 2^76 to 2^77
2024-07-13	SRBase	NF	no factor from 2^75 to 2^76
2023-01-15	SRBase	NF	no factor from 2^74 to 2^75
2021-08-02	SRBase	NF	no factor from 2^73 to 2^74
2020-10-23	SRBase	NF	no factor from 2^72 to 2^73
2017-03-20	workerthread	NF	no factor from 2^71 to 2^72
2016-12-24	proxy2222	NF	no factor from 2^70 to 2^71
2016-12-24	proxy2222	NF	no factor from 2^69 to 2^70
2016-12-24	proxy2222	NF	no factor from 2^68 to 2^69
2016-03-10	dbaugh	NF	no factor from 2^67 to 2^68
2015-02-02	el grocco	NF	no factor from 2^66 to 2^67
2012-11-21	KYOJI_KAMEI	NF	no factor from 2^65 to 2^66
2010-12-05	sasaki3	NF	no factor from 2^64 to 2^65
2010-06-12	sasaki3	NF	no factor from 2^63 to 2^64