2 663 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
63913	5	16.0	old
15743657	8	23.9	old
3939912086508906841	19	61.8	old
122833083008032212960630676991	30	96.6	old

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	7221 / 40830

Estimated T-Level: 50.9 ⓘ

TF below 2^164 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	CD7D53F10B272C53	4	0	1	3
Verified	2017-10-02	kkmrkkblmbrbk	CD7D53F10B272C53	4	0	1	3
Verified	2017-12-07	ATH	CD7D53F10B272C53	4	1329	1	3
Verified	2020-04-17	Oliver Kruse	0209CB3E244B7E27	4	361	5	3
Verified	2024-02-03	Wentao Huang	0209CB3E244B7E27	4	1124	5	3

History

Date	User	Type	Result
2024-02-03	Wentao Huang	C-PRP	M2663/63913/15743657/3939912086508906841/122833083008032212960630676991 : 0209CB3E244B7E27 PRP: Verified PRP without proof (small exponent)
2021-07-05	ViliamF	NF-PM1	B1=1000000000, B2=191000000000
2020-04-17	Oliver Kruse	C-PRP	M2663/63913/15743657/3939912086508906841/122833083008032212960630676991 : 0209CB3E244B7E27 PRP: Verified PRP without proof (small exponent)
2017-12-07	ATH	C-PRP	M2663/63913/15743657/3939912086508906841/122833083008032212960630676991 : CD7D53F10B272C53 PRP: Verified PRP without proof (small exponent)
2017-10-02	kkmrkkblmbrbk	C-PRP	M2663/63913/15743657/3939912086508906841/122833083008032212960630676991 : CD7D53F10B272C53 PRP: Verified PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M2663/known_factors : CD7D53F10B272C53 PRP without proof (not generated)