7 559 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
17268839507863	14	44.0	old
8530316066880409	16	52.9	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	12583 / 16550

Estimated T-Level: 48.8 ⓘ

TF below 2^157 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	99C0CA934CB94CDD	2	0	1	3
Verified	No proof (small exponent)	2017-10-12	kkmrkkblmbrbk	99C0CA934CB94CDD	2	6627	1	3
Verified	No proof (small exponent)	2020-04-17	Oliver Kruse	D6CB6008F3BA69CE	2	1804	5	3
Verified	No proof (small exponent)	2024-02-03	Wentao Huang	D6CB6008F3BA69CE	2	7262	5	3

History

Date	User	Type	Result
2025-05-26	masser	NF-PP1	Start=117/47, B1=1300000000, B2=1298700000000
2024-12-06	yuriy_5-1	NF-PM1	B1=12000000000, B2=28109516288023170
2024-02-03	Wentao Huang	C-PRP	M7559/17268839507863/8530316066880409 : D6CB6008F3BA69CE
2021-07-07	ViliamF	NF-PM1	B1=1000000000, B2=201000000000
2020-04-17	Oliver Kruse	C-PRP	M7559/17268839507863/8530316066880409 : D6CB6008F3BA69CE
2017-10-12	kkmrkkblmbrbk	C-PRP	M7559/17268839507863/8530316066880409 : 99C0CA934CB94CDD
2017-09-21	Oliver Kruse	C-PRP	M7559/17268839507863/8530316066880409 : 99C0CA934CB94CDD
2017-09-21	Oliver Kruse	C-PRP	M7559/17268839507863/8530316066880409 : 99C0CA934CB94CDD
1999-04-23	-anonymous-	F-PM1	Factor: 17268839507863