8 089 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 1 known prime factor. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
72404441628401	14	46.0	old

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	1566 / 1566
40	3000000	4588 / 4588
45	11000000	8864 / 9201

Estimated T-Level: 44.8 ⓘ

TF below 2^144 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	39E04C42301F7ACC	1	0	1	3
Verified	2017-10-12	kkmrkkblmbrbk	39E04C42301F7ACC	1	2159	1	3
Verified	2020-04-17	Oliver Kruse	33CB98B4EFD6C4AA	1	1202	5	3
Verified	2024-07-01	kkmrkkblmbrbk	33CB98B4EFD6C4AA	1	1215	5	3

History

Date	User	Type	Result
2024-07-01	kkmrkkblmbrbk	C-PRP	M8089/72404441628401 : 33CB98B4EFD6C4AA PRP: Verified PRP without proof (small exponent)
2023-05-26	JacobZ	NF-PM1	B1=73000000000, B2=299074993103236350
2021-12-16	Lisander Viaene	NF-PM1	B1=100000000
2020-04-17	Oliver Kruse	C-PRP	M8089/72404441628401 : 33CB98B4EFD6C4AA PRP: Verified PRP without proof (small exponent)
2017-10-12	kkmrkkblmbrbk	C-PRP	M8089/72404441628401 : 39E04C42301F7ACC PRP: Verified PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M8089/72404441628401 : 39E04C42301F7ACC PRP: Verified PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M8089/72404441628401 : 39E04C42301F7ACC PRP without proof (not generated)