3 898 057 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
217136426121939127183	21	67.6	2018-06-25 06:37:56

ECM

Digits	B1	Curves
25	50000	12 / 280

Estimated T-Level: 20.2 ⓘ

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

Status	Date	User	Residue	Shift
Verified (Factored)	1998-06-28	The Feenster	EBAD2F30B48B21E9	0
Verified (Factored)	1999-10-07	Eric Karlsen	EBAD2F30B48B21E9	1524730

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2018-06-25	_p95holder_	29A42E69BFAA6ADB	1	3378765	5	3
Verified	2018-06-26	Battlemaxx	29A42E69BFAA6ADB	1	397031	5	3

History

Date	User	Type	Result
2022-09-09	Joss	NF-PM1	B1=1000000, B2=212677920
2022-04-06	Joss	NF-PM1	B1=1000000, B2=147585900
2018-06-26	Battlemaxx	C-PRP	M3898057/217136426121939127183 : 29A42E69BFAA6ADB PRP: Verified PRP without proof (not generated)
2018-06-25	_p95holder_	C-PRP	M3898057/217136426121939127183 : 29A42E69BFAA6ADB PRP: Verified PRP without proof (not generated)
2018-06-25	TJAOI	F	Factor: 217136426121939127183 / TF: 67-68
2016-11-30	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-04-03	Joss	NF-PM1	B1=250905, B2=4516290, E=6
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2016-02-19	ramgeis	NF	no factor from 2^65 to 2^66
2015-01-20	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-01-20	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-11-01	Joss	NF-PM1	B1=86466
2012-04-20	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2011-10-09	Squeeky_Squirrel	NF-PM1	B1=70000, B2=1172500, E=6
2011-02-04	markr	NF	no factor from 2^61 to 2^62
2009-08-01	Carsten Kossendey	NF-PM1	B1=20000, B2=275000
2009-02-25	S485122	NF	no factor from 2^60 to 2^61