6 021 887 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
204014105003507365519	21	67.5	2018-05-29 09:12:55

ECM

Digits	B1	Curves
25	50000	14 / 280

Estimated T-Level: 20.3 ⓘ

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

Status	Date	User	Residue	Shift
Verified (Factored)	1998-10-25	Darren Olafson	873BFF0F2EBCC0D9	0
Verified (Factored)	2001-03-05	NoRSfall	873BFF0F2EBCC0D9	3880012

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2018-06-04	_p95holder_	38EC6B463F350F83	1	3189686	5	3
Verified	2018-06-05	kkmrkkblmbrbk	38EC6B463F350F83	1	4523964	5	3

History

Date	User	Type	Result
2021-07-23	ATH	NF-PP1	Start=2/7, B1=500000, B2=26000000
2018-06-05	kkmrkkblmbrbk	C-PRP	M6021887/204014105003507365519 : 38EC6B463F350F83 PRP: Verified PRP without proof (not generated)
2018-06-04	_p95holder_	C-PRP	M6021887/204014105003507365519 : 38EC6B463F350F83 PRP: Verified PRP without proof (not generated)
2018-05-29	ramgeis	F	Factor: 204014105003507365519 / TF: 67-68*
2016-03-09	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2015-10-03	snme2pm1	NF	no factor from 2^65 to 2^66
2014-05-30	c10ck3r	NF	no factor from 2^63 to 2^65
2013-01-30	Squeeky_Squirrel	NF-PM1	B1=110000, B2=2172500, E=6