7 137 029 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
209016510142577218231	21	67.5	2018-07-26 09:15:09

ECM

Digits	B1	Curves
25	50000	6 / 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)	1999-05-02	Stefan Enberg	04891090491B0F68	5170110
Verified (Factored)	2002-04-28	Giorgos Ikonomou	04891090491B0F68	1935043

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2018-07-31	_p95holder_	28FDCAF883D4FF34	1	3200451	5	3
Verified	2019-03-23	Cubox	28FDCAF883D4FF34	1	3757115	5	3

History

Date	User	Type	Result
2019-03-23	Cubox	C-PRP	M7137029/209016510142577218231 : 28FDCAF883D4FF34 PRP: Verified PRP without proof (not generated)
2018-07-31	_p95holder_	C-PRP	M7137029/209016510142577218231 : 28FDCAF883D4FF34 PRP: Verified PRP without proof (not generated)
2018-07-26	ramgeis	F	Factor: 209016510142577218231 / TF: 67-68*
2016-10-23	Gordon Spence	NF	no factor from 2^66 to 2^67
2015-06-21	VictordeHollander	NF	no factor from 2^65 to 2^66
2014-02-07	lycorn	NF	no factor from 2^64 to 2^65
2014-02-02	Nesowa	NF	no factor from 2^63 to 2^64
2011-12-21	James Heinrich	NF-PM1	B1=135000, B2=2902500, E=6