1 708 439 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
7739228671	10	32.8	old
48672734709555285256544783	26	85.3	2023-01-20 08:35:29

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	106 / 640

Estimated T-Level: 25.8 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-30	alpertron	49D04E75FC99B7C1	1	0	1	3
Verified (Factored)	2017-10-18	Oliver Kruse	49D04E75FC99B7C1	1	413673	1	3
Verified	2023-01-21	LordJulius	B60D318BF623B90D	2	696836	5	3

History

Date	User	Type	Result
2023-01-21	M. Farrokhi D. G.	CERT	PRP Certification Proof certified good
2023-01-21	LordJulius	C-PRP	M1708439/7739228671/48672734709555285256544783 : B60D318BF623B90D PRP proof power = 7 PRP: Verified Proof certified good
2023-01-20	TJAOI	F-ECM	Factor: 48672734709555285256544783 / (ECM curve 32, B1=250000, B2=40000000)
2017-10-18	Oliver Kruse	C-PRP	M1708439/7739228671 : 49D04E75FC99B7C1 PRP: Verified (Factored) PRP without proof (not generated)
2017-09-30	alpertron	C-PRP	M1708439/7739228671 : 49D04E75FC99B7C1 PRP: Verified (Factored) PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12