3 577 517 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
80171199736997937209	20	66.1	2015-07-11 13:58:48

ECM

Digits	B1	Curves
25	50000	7 / 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)		Robert Friberg	CEC1983E4CF647CA	0
Verified (Factored)	1999-10-21	Jerry Han	CEC1983E4CF647CA	2366595

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-11-09	kkmrkkblmbrbk	49C81B26D1D51601	1	1759640	5	3
Verified	2017-11-25	Oliver Kruse	49C81B26D1D51601	1	1379238	5	3

History

Date	User	Type	Result
2022-05-26	Joss	NF-PM1	B1=100000, B2=130364850
2022-03-01	Joss	NF-PM1	B1=100000
2017-11-25	Oliver Kruse	C-PRP	M3577517/80171199736997937209 : 49C81B26D1D51601 PRP: Verified PRP without proof (not generated)
2017-11-09	kkmrkkblmbrbk	C-PRP	M3577517/80171199736997937209 : 49C81B26D1D51601 PRP: Verified PRP without proof (not generated)
2015-07-11	Sid & Andy	F-ECM	Factor: 80171199736997937209
2015-01-30	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-01-30	VictordeHollander	NF	no factor from 2^63 to 2^64
2012-07-02	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2011-12-25	Squeeky_Squirrel	NF-PM1	B1=85000, B2=1572500, E=6
2011-06-16	markr	NF	no factor from 2^61 to 2^62
2009-07-09	Carsten Kossendey	NF-PM1	B1=20000, B2=245000
2009-03-15	S485122	NF	no factor from 2^60 to 2^61