2 112 217 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
216540383549497364481676271	27	87.5	2014-11-05 12:10:37

ECM

Digits	B1	Curves
25	50000	117 / 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)		Jim Borgardt	DC9C2CF32B227F3C	0
Verified (Factored)	1999-02-07	Daniel Goertzen	DC9C2CF32B227F3C	314123

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-07	Oliver Kruse	49246AD3F945BF23	1	0	1	3
Verified	2017-11-17	kkmrkkblmbrbk	49246AD3F945BF23	1	327887	1	3

History

Date	User	Type	Result
2022-03-09	LordJulius	NF	no factor from 2^1 to 2^60
2017-11-17	kkmrkkblmbrbk	C-PRP	M2112217/216540383549497364481676271 : 49246AD3F945BF23 PRP: Verified PRP without proof (not generated)
2017-10-07	Oliver Kruse	C-PRP	M2112217/216540383549497364481676271 : 49246AD3F945BF23 PRP: Verified PRP without proof (not generated)
2016-03-21	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2014-11-05	arnaud	F-ECM	Factor: 216540383549497364481676271
2013-09-05	ramgeis	NF	no factor from 2^62 to 2^63
2012-04-01	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-01-27	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
2009-01-03	Sturle Sunde	NF	no factor from 2^60 to 2^61