14 991 737 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
375619233481258157155439	24	78.3	2017-05-14 10:44:48

ECM

Digits	B1	Curves
25	50000	1 / 280

Estimated T-Level: 20.0 ⓘ

TF below 2^61 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	2002-08-10	C. Cooper / S. Boone	8F33BCCAEBF72790	5078679
Verified (Factored)	2005-11-13	Stephen Wood	8F33BCCAEBF72790	6803120

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2023-06-06	Perig	5E3250DB3D41B999	1	1932112	5	3

P-1 factors

Date	Factor	B1	B2
2017-05-14	375619233481258157155439	300000	6000000

History

Date	User	Type	Result
2023-06-06	iwes	CERT	PRP Certification Proof certified good
2023-06-06	Perig	C-PRP	M14991737/375619233481258157155439 : 5E3250DB3D41B999 PRP proof power = 8 PRP: Verified Proof certified good
2023-05-26	nordi	NF-PM1	B1=300000, B2=320708850
2023-04-03	nordi	NF-PM1	B1=300000
2017-05-14	Tha	F-PM1	Factor: 375619233481258157155439 / (P-1, B1=300000, B2=6000000, E=6)
2015-10-25	Nesowa	NF	no factor from 2^66 to 2^67
2014-06-23	Nesowa	NF	no factor from 2^65 to 2^66