8 929 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 3 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
196439	6	17.6	old
2555359872029449	16	51.2	old
1115430961341245177793296572392840751	37	119.7	2018-05-11 03:07:08

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	8203 / 16550

Estimated T-Level: 47.5 ⓘ

TF below 2^153 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-21	Oliver Kruse	04600D941A29E913	2	0	1	3
Verified (Factored)	2017-10-12	kkmrkkblmbrbk	04600D941A29E913	2	7349	1	3
Verified	2018-05-12	Hexaflexagon	99E9608C4283652F	3	5694	5	3
Verified	2018-05-13	Oliver Kruse	99E9608C4283652F	3	3382	5	3

History

Date	User	Type	Result
2023-08-01	JacobZ	NF-PM1	B1=65000000000, B2=251099672798124150
2021-12-16	Lisander Viaene	NF-PM1	B1=100000000
2018-05-13	Oliver Kruse	C-PRP	M8929/196439/2555359872029449/1115430961341245177793296572392840751 : 99E9608C4283652F PRP: Verified PRP without proof (small exponent)
2018-05-12	Hexaflexagon	C-PRP	M8929/196439/2555359872029449/1115430961341245177793296572392840751 : 99E9608C4283652F PRP: Verified PRP without proof (small exponent)
2018-05-11	Hexaflexagon	F-ECM	Factor: 1115430961341245177793296572392840751 / (ECM curve 777, B1=3000000, B2=300000000)
2017-10-12	kkmrkkblmbrbk	C-PRP	M8929/196439/2555359872029449 : 04600D941A29E913 PRP: Verified PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M8929/196439/2555359872029449 : 04600D941A29E913 PRP: Verified PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M8929/196439/2555359872029449 : 04600D941A29E913 PRP without proof (not generated)