2 811 947 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
11310451278063957889	20	63.3	2009-03-20 11:07:03

ECM

Digits	B1	Curves
25	50000	4 / 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)		Mel L. Barclay MD	4EC1EE114A5D43CF	0
Verified (Factored)	1999-05-16	Vaughan Bennett	4EC1EE114A5D43CF	52304

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-21	Oliver Kruse	1FE6C121BE6A1673	1	189845	5	3
Verified	2017-12-06	kkmrkkblmbrbk	1FE6C121BE6A1673	1	1134485	5	3

History

Date	User	Type	Result
2023-01-29	USAFSS	NF-PM1	B1=360000, B2=287380170
2017-12-06	kkmrkkblmbrbk	C-PRP	M2811947/11310451278063957889 : 1FE6C121BE6A1673 PRP: Verified PRP without proof (not generated)
2017-10-21	Oliver Kruse	C-PRP	M2811947/11310451278063957889 : 1FE6C121BE6A1673 PRP: Verified PRP without proof (not generated)
2009-03-20	oodaira	F-ECM	Factor: 11310451278063957889
2009-02-14	Sturle Sunde	NF	no factor from 2^60 to 2^61