2 238 647 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
7099094182084781558229127	25	82.6	2015-12-02 19:19:04

ECM

Digits	B1	Curves
25	50000	116 / 280

Estimated T-Level: 22.1 ⓘ

TF below 2^68 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		The Vanguard (Nelson Jones & Mohammad Malik & Anthony Joseph & Art Mandelin & Ed	0FB865D4D75F1F78	0
Verified (Factored)	1999-07-12	Marco Tagliatti	0FB865D4D75F1F78	948472

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-30	alpertron	69BA03668C375C8F	1	0	1	3
Verified	2017-10-28	Oliver Kruse	69BA03668C375C8F	1	1026415	1	3

P-1 factors

Date	Factor	B1	B2
2015-12-02	7099094182084781558229127	1000000	6000000

History

Date	User	Type	Result
2022-03-09	LordJulius	NF	no factor from 2^1 to 2^60
2017-10-28	Oliver Kruse	C-PRP	M2238647/7099094182084781558229127 : 69BA03668C375C8F PRP: Verified PRP without proof (not generated)
2017-09-30	alpertron	C-PRP	M2238647/7099094182084781558229127 : 69BA03668C375C8F PRP: Verified PRP without proof (not generated)
2016-04-22	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2015-12-02	Alexander Dubrovin	F-PM1	Factor: 7099094182084781558229127 / (P-1, B1=1000000, B2=6000000, E=6)
2015-10-25	ramgeis	NF	no factor from 2^65 to 2^66
2015-03-10	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-03-10	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-09-30	Joss	NF-PM1	B1=142342
2014-06-01	Joss	NF-PM1	B1=113671
2013-01-23	dbaugh	NF	no factor from 2^62 to 2^63
2012-04-27	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-01-14	Oscar Östlin	NF-PM1	B1=85000, B2=1636250, E=6
2010-11-08	Oscar Östlin	NF-PM1	B1=75011
2009-01-11	Sturle Sunde	NF	no factor from 2^60 to 2^61