2 117 321 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
2250175441722112087949493919	28	90.9	2016-08-22 07:59:55

ECM

Digits	B1	Curves
25	50000	115 / 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)		Mikael Billberg	B78C9D97BF341F86	0
Verified (Factored)	1999-02-07	Aaron B	B78C9D97BF341F86	1431360
Verified (Factored)	1999-02-14	Aaron B	B78C9D97BF341F86	858254

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-07	Oliver Kruse	AEDA2CFAEFC45B5D	1	0	1	3
Verified	2017-11-17	kkmrkkblmbrbk	AEDA2CFAEFC45B5D	1	2112936	1	3

History

Date	User	Type	Result
2023-01-28	USAFSS	NF-PM1	B1=288000, B2=338550030
2017-11-17	kkmrkkblmbrbk	C-PRP	M2117321/2250175441722112087949493919 : AEDA2CFAEFC45B5D PRP: Verified PRP without proof (not generated)
2017-10-07	Oliver Kruse	C-PRP	M2117321/2250175441722112087949493919 : AEDA2CFAEFC45B5D PRP: Verified PRP without proof (not generated)
2016-08-22	bam	F-ECM	Factor: 2250175441722112087949493919 / (ECM curve 3, B1=50000, B2=5000000)
2016-07-22	Joss	NF-PM1	B1=186340, B2=6020000, E=12
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2016-01-06	ramgeis	NF	no factor from 2^65 to 2^66
2015-03-15	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-03-15	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-09-06	ramgeis	NF	no factor from 2^62 to 2^63
2012-04-01	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-01-25	James Heinrich	NF-PM1	B1=140000, B2=3010000, E=6
2011-01-10	Joss	NF-PM1	B1=50000
2010-12-30	Joss	NF-PM1	B1=30000
2009-08-02	USAFSS	NF-PM1	B1=20000, B2=260000
2009-01-02	Sturle Sunde	NF	no factor from 2^60 to 2^61