2 738 017 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
13935499816338843206111	23	73.6	2013-02-22 17:58:08

ECM

Digits	B1	Curves
25	50000	8 / 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)		Michael B. Clark	287A07663C1C6911	0
Verified (Factored)	1999-07-12	Rob Simons	287A07663C1C6911	571682

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-20	Oliver Kruse	868ECAA8FC097030	1	2480048	5	3
Verified	2017-12-05	kkmrkkblmbrbk	868ECAA8FC097030	1	2491073	5	3

History

Date	User	Type	Result
2023-02-26	USAFSS	NF-PM1	B1=300000, B2=235127970
2017-12-05	kkmrkkblmbrbk	C-PRP	M2738017/13935499816338843206111 : 868ECAA8FC097030 PRP: Verified PRP without proof (not generated)
2017-10-20	Oliver Kruse	C-PRP	M2738017/13935499816338843206111 : 868ECAA8FC097030 PRP: Verified PRP without proof (not generated)
2013-02-22	jim f in mn	F-ECM	Factor: 13935499816338843206111
2013-01-14	dbaugh	NF	no factor from 2^62 to 2^63
2012-04-09	Grant McCracken	NF	no factor from 2^61 to 2^62
2011-04-27	James Heinrich	NF-PM1	B1=185000, B2=4625000, E=6
2011-01-20	Joss	NF-PM1	B1=50000
2010-12-29	Joss	NF-PM1	B1=30000
2010-12-19	Joss	NF-PM1	B1=20000
2009-01-28	Sturle Sunde	NF	no factor from 2^60 to 2^61