5 000 213 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
231955720158182707319	21	67.7	2017-01-19 12:10:29

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)		James Bullington	9F0390508912BB2F	0
Verified (Factored)	2000-10-15	MIT dept. of Univ. of Jyvaskyla	9F0390508912BB2F	2160281

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-11-20	Xyzzy	EC0CCEB3DEE23BBD	1	931489	5	3
Verified	2018-01-10	kkmrkkblmbrbk	EC0CCEB3DEE23BBD	1	2803734	5	3

History

Date	User	Type	Result
2023-10-20	Lisander Viaene	NF-PM1	B1=1500000, B2=3045809130
2021-01-14	Tha	NF-PM1	B1=600000, B2=12000000, E=12
2020-06-14	Tha	NF-PM1	B1=600000, B2=12000000, E=12
2018-01-10	kkmrkkblmbrbk	C-PRP	M5000213/231955720158182707319 : EC0CCEB3DEE23BBD PRP: Verified PRP without proof (not generated)
2017-11-20	Xyzzy	C-PRP	M5000213/231955720158182707319 : EC0CCEB3DEE23BBD PRP: Verified PRP without proof (not generated)
2017-07-01	alpertron	NF-PM1	B1=10000, B2=200000
2017-01-19	Conductor	F	Factor: 231955720158182707319 / TF: 67-68
2016-03-20	proxy2222	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^1 to 2^63
2015-04-19	Gordon Spence	NF	no factor from 2^65 to 2^66
2014-08-29	lycorn	NF	no factor from 2^64 to 2^65
2014-08-29	kracker	NF	no factor from 2^63 to 2^64
2014-08-24	AdolfNor	NF-PM1	B1=1000000, B2=10000000, e=12
2013-03-16	Squeeky_Squirrel	NF-PM1	B1=315000, B2=8505000, E=12
2010-11-02	Joss	NF-PM1	B1=200000
2009-08-04	USAFSS	NF-PM1	B1=55000, B2=907500, E=6