3 797 371 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
47126514148519298641	20	65.4	2012-12-27 04:19:17
598380992880632014751351	24	79.0	2022-05-26 12:47:39

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)	1998-05-01	Robert Friberg	3AA3962572748D62	0
Verified (Factored)	1999-11-17	Donald Atkinson	3AA3962572748D62	439461

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-20	kkmrkkblmbrbk	1FC18110D531FD21	1	0	1	3
Verified (Factored)	2017-12-09	Oliver Kruse	1FC18110D531FD21	1	3769907	1	3
Verified	2022-06-01	XZT	DD2090A44A30125F	2	2777280	5	3

P-1 factors

Date	Factor	B1	B2
2012-12-27	47126514148519298641	255000	7777500
2022-05-26	598380992880632014751351	100000	130364850

History

Date	User	Type	Result
2022-06-01	curtisc	CERT	PRP Certification Proof certified good
2022-06-01	XZT	C-PRP	M3797371/47126514148519298641/598380992880632014751351 : DD2090A44A30125F PRP proof power = 7 PRP: Verified Proof certified good
2022-05-26	Joss	F-PM1	Factor: 598380992880632014751351 / (P-1, B1=100000, B2=130364850)
2022-03-22	Joss	NF-PM1	B1=100000
2022-03-05	Joss	NF-PM1	B1=90000
2017-12-09	Oliver Kruse	C-PRP	M3797371/47126514148519298641 : 1FC18110D531FD21 PRP: Verified (Factored) PRP without proof (not generated)
2017-09-20	kkmrkkblmbrbk	C-PRP	M3797371/47126514148519298641 : 1FC18110D531FD21 PRP: Verified (Factored) PRP without proof (not generated)
2012-12-27	Squeeky_Squirrel	F-PM1	Factor: 47126514148519298641
2012-04-20	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2011-04-02	markr	NF	no factor from 2^61 to 2^62
2009-07-15	Carsten Kossendey	NF-PM1	B1=20000, B2=270000
2009-02-28	S485122	NF	no factor from 2^60 to 2^61