321 443 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
17245610146752861037719559	26	83.8	2019-03-15 12:36:50

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	350 / 640

Estimated T-Level: 27.7 ⓘ

TF below 2^87 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		David Slowinski	64D6	0
Verified (Factored)		Unknown	64D6	0
Verified (Factored)		Guillermo Ballester Valor	480F98AF8F6B64D6	0
Verified (Factored)		Eivind Triel	480F98AF8F6B64D6	259521
Verified (Factored)	2002-01-15	Dennis Pope	480F98AF8F6B64D6	207466

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2019-03-16	ANONYMOUS	84664DB0D0324A6E	1	295368	5	3
Verified	2019-03-17	ANONYMOUS	84664DB0D0324A6E	1	86260	5	3
Verified	2019-04-09	kkmrkkblmbrbk	84664DB0D0324A6E	1	104274	5	3

History

Date	User	Type	Result
2022-03-07	LordJulius	NF	no factor from 2^54 to 2^55
2019-04-09	kkmrkkblmbrbk	C-PRP	M321443/17245610146752861037719559 : 84664DB0D0324A6E PRP: Verified PRP without proof (small exponent)
2019-03-17	ANONYMOUS	C-PRP	M321443/17245610146752861037719559 : 84664DB0D0324A6E PRP: Verified PRP without proof (small exponent)
2019-03-16	ANONYMOUS	C-PRP	M321443/17245610146752861037719559 : 84664DB0D0324A6E PRP: Verified PRP without proof (small exponent)
2019-03-15	alex	F-ECM	Factor: 17245610146752861037719559 / (ECM curve 55, B1=250000, B2=25000000, Sigma=8667583194796120)
2018-01-22	Gordon Spence	NF	no factor from 2^64 to 2^65
2016-06-19	mikr	NF-PM1	B1=60000000, B2=3000000000, E=12
2015-12-20	Gordon Spence	NF	no factor from 2^63 to 2^64
2015-12-20	Gordon Spence	NF	no factor from 2^62 to 2^63
2015-07-22	NR	NF	no factor from 2^61 to 2^62
2012-04-27	David Campeau	NF	no factor from 2^60 to 2^61
2012-01-19	alpertron	NF-PM1	B1=10000000, B2=200000000, E=12
2011-08-06	Joss	NF-PM1	B1=1447168
2009-01-24	Sturle Sunde	NF	no factor from 2^59 to 2^60
2008-12-31	Sturle Sunde	NF	no factor from 2^58 to 2^59