8 787 041 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
28360637546313038431	20	64.6	2013-11-20 01:21:51

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)	1999-12-30	Joris Overzet	09F2D8E955F02141	7982057
Verified (Factored)	2003-02-02	Ars Technica Team Prime Rib	09F2D8E955F02141	6120974

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2019-01-26	Luigi Morelli	F840BAF4B9D81DE4	1	1418036	5	3
Verified	2020-09-07	Wentao Huang	F840BAF4B9D81DE4	1	5938727	5	3

History

Date	User	Type	Result
2020-09-07	Ben Delo	CERT	PRP Certification Proof certified good
2020-09-07	Wentao Huang	C-PRP	M8787041/28360637546313038431 : F840BAF4B9D81DE4 PRP proof power = 8 PRP: Verified Proof certified good
2019-01-26	Luigi Morelli	C-PRP	M8787041/28360637546313038431 : F840BAF4B9D81DE4 PRP: Verified PRP without proof (not generated)
2013-11-20	alan145	F-ECM	Factor: 28360637546313038431
2012-06-30	James Heinrich	NF-PM1	B1=165000, B2=3547500, E=6