2 783 923 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
14044242768402761249873	23	73.6	2015-03-17 22:51:06

ECM

Digits	B1	Curves
25	50000	10 / 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)		Nino Porcino	0ECC43AF2074D31C	0
Verified (Factored)	1999-07-12	Vassilo Walluschnig	0ECC43AF2074D31C	721987

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-21	Oliver Kruse	4136CCB66B3425B1	1	357106	5	3
Verified	2017-12-06	kkmrkkblmbrbk	4136CCB66B3425B1	1	2775340	5	3

History

Date	User	Type	Result
2023-01-27	USAFSS	NF-PM1	B1=288000, B2=261254070
2017-12-06	kkmrkkblmbrbk	C-PRP	M2783923/14044242768402761249873 : 4136CCB66B3425B1 PRP: Verified PRP without proof (not generated)
2017-10-21	Oliver Kruse	C-PRP	M2783923/14044242768402761249873 : 4136CCB66B3425B1 PRP: Verified PRP without proof (not generated)
2015-03-17	bam	F-ECM	Factor: 14044242768402761249873 / (ECM curve 1, B1=50000, B2=5000000)
2014-10-28	Joss	NF-PM1	B1=123055
2013-01-14	dbaugh	NF	no factor from 2^62 to 2^63
2012-04-03	Grant McCracken	NF	no factor from 2^61 to 2^62
2010-11-25	markr	NF-PM1	B1=100000, B2=2075000, E=6
2010-11-11	Joss	NF-PM1	B1=15000
2009-01-28	Sturle Sunde	NF	no factor from 2^60 to 2^61