9 636 421 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
599988466715054862566879	24	79.0	2014-11-11 02:10:31

ECM

Digits	B1	Curves
25	50000	3 / 280

Estimated T-Level: 20.1 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	2000-04-12	Nathaniel Hang	9A82B66D0C13A9D3	7658672
Verified (Factored)	2003-06-09	Marc Getty / Phil Fizur	9A82B66D0C13A9D3	1776604

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2019-10-06	mnd9	B9845562269D215F	1	7559559	5	3
Verified	2020-12-18	kutens	B9845562269D215F	1	7228429	5	3

History

Date	User	Type	Result
2020-12-18	Evans Paschal	CERT	PRP Certification Proof certified good
2020-12-18	kutens	C-PRP	M9636421/599988466715054862566879 : B9845562269D215F PRP proof power = 8 PRP: Verified Proof certified good
2019-10-06	mnd9	C-PRP	M9636421/599988466715054862566879 : B9845562269D215F PRP: Verified PRP without proof (not generated)
2014-11-11	JimBa	F-ECM	Factor: 599988466715054862566879 / (ECM curve 3, B1=50000, B2=5000000)
2013-08-28	Nesowa	NF	no factor from 2^64 to 2^65
2013-02-11	Nesowa	NF-PM1	B1=115000, B2=2185000, E=6
2009-07-09	Carsten Kossendey	NF-PM1	B1=55000, B2=852500, E=6