9 961 129 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
19153040449104596273	20	64.1	2013-05-09 22:15:27

Status	Date	User	Residue	Shift
Verified (Factored)	2000-05-17	Pieter Heij	4BD09D9D132C8274	694920
Verified (Factored)	2003-09-14	Mikael Elhouar	4BD09D9D132C8274	2905880

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2019-11-27	ATH	E68387638DFAE3AA	1	2142226	5	3
Verified	2021-01-13	kutens	E68387638DFAE3AA	1	9132585	5	3

P-1 factors

Date	Factor	B1	B2
2013-05-09	19153040449104596273	120000	2400000

History

Date	User	Type	Result
2021-01-13	Ahasver Wanderer	CERT	PRP Certification Proof certified good
2021-01-13	kutens	C-PRP	M9961129/19153040449104596273 : E68387638DFAE3AA PRP proof power = 8 PRP: Verified Proof certified good
2019-11-27	ATH	C-PRP	M9961129/19153040449104596273 : E68387638DFAE3AA PRP: Verified PRP without proof (not generated)
2013-05-09	Nesowa	F-PM1	Factor: 19153040449104596273