8 906 501 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
71252009	8	26.1	old
2407555489013698023313	22	71.0	2021-07-28 19:06:51

ECM

Digits	B1	Curves
25	50000	5 / 280

Estimated T-Level: 20.1 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2019-03-28	bunddog	E14376C0B3CE1914	1	6201353	5	3
Verified (Factored)	2020-09-22	marssystems	E14376C0B3CE1914	1	1576528	5	3
Verified	2021-07-28	ATH	E14376C0B3CE1914	2	395744	5	3

History

Date	User	Type	Result
2021-07-28	GAN	CERT	PRP Certification Proof certified good
2021-07-28	ATH	C-PRP	M8906501/71252009/2407555489013698023313 : E14376C0B3CE1914 PRP proof power = 8 PRP: Verified Proof certified good
2021-07-28	ATH	F-PP1	Start=2/7, B1=250000, B2=25000000, Factor: 2407555489013698023313
2020-09-22	marssystems	C-PRP	M8906501/71252009 : E14376C0B3CE1914 PRP: Verified (Factored) PRP without proof (not generated)
2019-03-28	bunddog	C-PRP	M8906501/71252009 : E14376C0B3CE1914 PRP: Verified (Factored) PRP without proof (not generated)