1 523 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 5 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
2522089	7	21.3	old
273887183	9	28.0	old
1117808897	10	30.1	old
182902246957664987166063221498412840793	39	127.1	old
4249339225890381695913195696255068008375643417	46	151.6	2008-04-25 01:28:01

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	181711 / 194238

Estimated T-Level: 64.7 ⓘ

TF below 2^210 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-21	Oliver Kruse	8A082CD8B71C35A3	5	0	1	3
Verified	2017-10-02	kkmrkkblmbrbk	8A082CD8B71C35A3	5	0	1	3
Verified	2017-12-07	ATH	8A082CD8B71C35A3	5	100	1	3
Verified	2020-04-17	Oliver Kruse	EA914473F665B424	5	869	5	3
Verified	2020-08-12	_p95holder_	EA914473F665B424	5	1053	5	3

History

Date	User	Type	Result
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	M1523/2522089/273887183/1117808897/182902246957664987166063221498412840793/4249339225890381695913195696255068008375643417 : EA914473F665B424 PRP: Verified PRP without proof (small exponent)
2020-04-17	Oliver Kruse	C-PRP	M1523/2522089/273887183/1117808897/182902246957664987166063221498412840793/4249339225890381695913195696255068008375643417 : EA914473F665B424 PRP: Verified PRP without proof (small exponent)
2017-12-07	ATH	C-PRP	M1523/2522089/273887183/1117808897/182902246957664987166063221498412840793/4249339225890381695913195696255068008375643417 : 8A082CD8B71C35A3 PRP: Verified PRP without proof (small exponent)
2017-10-02	kkmrkkblmbrbk	C-PRP	M1523/2522089/273887183/1117808897/182902246957664987166063221498412840793/4249339225890381695913195696255068008375643417 : 8A082CD8B71C35A3 PRP: Verified PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M1523/known_factors : 8A082CD8B71C35A3 PRP without proof (not generated)
2016-09-07	kkmrkkblmbrbk	NF-PM1	B1=1000000000, B2=100000000000, E=12