1 499 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Details

Composite, with 2 known prime factors. Cofactor is composite.

Trial Factored to 2⁶⁸

TF target 2⁴⁴

Factored

Factor	Digits	Bits	Date
2999	4	11.6	old
400453196195527405748338277279809339221225225247	48	158.1	2013-05-01 11:51:00

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	1566 / 1566
40	3000000	4588 / 4588
45	11000000	9201 / 9201
50	44000000	16550 / 16550
55	110000000	40830 / 40830
60	260000000	105362 / 105362
65	800000000	194238 / 194238
70	2400000000	69893 / 350860

Estimated T-Level: 66.0 ⓘ

TF below 2^214 is very unlikely to find new factors due to ECM effort.

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	No proof (small exponent)	2017-09-21	Oliver Kruse	2F934FD08ED167FF	2	0	1	3
Verified	No proof (small exponent)	2017-10-02	kkmrkkblmbrbk	2F934FD08ED167FF	2	0	1	3
Verified	No proof (small exponent)	2017-12-07	ATH	2F934FD08ED167FF	2	766	1	3
Verified	No proof (small exponent)	2020-04-17	Oliver Kruse	22510EACE5E252D8	2	629	5	3
Verified	No proof (small exponent)	2020-08-12	_p95holder_	22510EACE5E252D8	2	1117	5	3
Factored	No proof (small exponent)	2022-05-12	Jorge Coveiro	22510EACE5E252D8	1	755	5	3

History

Date	User	Type	Result
2022-05-12	Jorge Coveiro	C-PRP	M1499/2999 : 22510EACE5E252D8
2021-07-21	ViliamF	NF-PP1	Start=2/7, B1=1000000000, B2=221000000000
2021-03-27	nordi	NF-PM1	B1=1000000000000, B2=2232843418649129478
2020-08-12	_p95holder_	C-PRP	M1499/2999/400453196195527405748338277279809339221225225247 : 22510EACE5E252D8
2020-04-17	Oliver Kruse	C-PRP	M1499/2999/400453196195527405748338277279809339221225225247 : 22510EACE5E252D8
2017-12-07	ATH	C-PRP	M1499/2999/400453196195527405748338277279809339221225225247 : 2F934FD08ED167FF
2017-10-02	kkmrkkblmbrbk	C-PRP	M1499/2999/400453196195527405748338277279809339221225225247 : 2F934FD08ED167FF
2017-09-21	Oliver Kruse	C-PRP	M1499/known_factors : 2F934FD08ED167FF
2016-09-07	kkmrkkblmbrbk	NF-PM1	B1=1000000000, B2=100000000000, E=12
2013-05-01	Never Odd Or Even	F-ECM	Factor: 400453196195527405748338277279809339221225225247