2 008 709 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
16069673	8	23.9	old
19729539799	11	34.2	2008-07-15 07:49:17
158703212909713	15	47.2	2008-08-26 20:20:29
86328799161424612032329	23	76.2	2021-04-19 15:47:51

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	164 / 640

Estimated T-Level: 26.3 ⓘ

TF below 2^82 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-05	Oliver Kruse	B73AD170ADFF797D	3	0	1	3
Verified (Factored)	2017-11-13	kkmrkkblmbrbk	B73AD170ADFF797D	3	1767835	1	3
Verified	2021-04-20	M8909387	4509ADAFFC33483F	4	550962	5	3

History

Date	User	Type	Result
2021-04-20	endlessness631	CERT	PRP Certification Proof certified good
2021-04-20	M8909387	C-PRP	M2008709/16069673/19729539799/158703212909713/86328799161424612032329 : 4509ADAFFC33483F PRP proof power = 7 PRP: Verified Proof certified good
2021-04-19	_p95holder_	F-ECM	Factor: 86328799161424612032329 / (ECM curve 2, B1=50000, B2=5000000)
2017-11-13	kkmrkkblmbrbk	C-PRP	M2008709/16069673/19729539799/158703212909713 : B73AD170ADFF797D PRP: Verified (Factored) PRP without proof (not generated)
2017-10-05	Oliver Kruse	C-PRP	M2008709/16069673/19729539799/158703212909713 : B73AD170ADFF797D PRP: Verified (Factored) PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2008-08-26	-Anonymous-	F	Factor: 158703212909713
2008-07-15	J Feitsma	F	Factor: 19729539799