2 827 387 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
2681565573213126429439	22	71.2	2010-10-31 00:35:31

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)		Dale Sinor	68ACA43E3C283484	0
Verified (Factored)	1999-05-02	Marek Chmielewski	68ACA43E3C283484	62130

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-22	Oliver Kruse	00A53E383758B5CA	1	2366822	5	3
Verified	2017-12-07	kkmrkkblmbrbk	00A53E383758B5CA	1	1470980	5	3

History

Date	User	Type	Result
2023-01-30	USAFSS	NF-PM1	B1=360000, B2=287380170
2017-12-07	kkmrkkblmbrbk	C-PRP	M2827387/2681565573213126429439 : 00A53E383758B5CA PRP: Verified PRP without proof (not generated)
2017-10-22	Oliver Kruse	C-PRP	M2827387/2681565573213126429439 : 00A53E383758B5CA PRP: Verified PRP without proof (not generated)
2010-10-31	Torchwood Institute	F-ECM	Factor: 2681565573213126429439
2009-02-13	Sturle Sunde	NF	no factor from 2^60 to 2^61