2 747 359 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
66204252219797014369	20	65.8	2011-05-02 18:59:11

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)		Joe Miller	E9AA734ECD89CC15	0
Verified (Factored)	1999-04-23	Mark A. Cornelius	E9AA734ECD89CC15	1983148

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-20	Oliver Kruse	8C1A3B4F512A1FFA	1	1818503	5	3
Verified	2017-12-05	kkmrkkblmbrbk	8C1A3B4F512A1FFA	1	77644	5	3

History

Date	User	Type	Result
2023-02-26	USAFSS	NF-PM1	B1=300000, B2=235127970
2017-12-05	kkmrkkblmbrbk	C-PRP	M2747359/66204252219797014369 : 8C1A3B4F512A1FFA PRP: Verified PRP without proof (not generated)
2017-10-20	Oliver Kruse	C-PRP	M2747359/66204252219797014369 : 8C1A3B4F512A1FFA PRP: Verified PRP without proof (not generated)
2011-05-02	James Heinrich	F-PM1	Factor: 66204252219797014369
2011-01-21	Joss	NF-PM1	B1=50000
2010-12-29	Joss	NF-PM1	B1=30000
2010-12-21	Joss	NF-PM1	B1=20000
2009-01-27	Sturle Sunde	NF	no factor from 2^60 to 2^61