2 408 587 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
43354567	8	25.4	old
8043413663239	13	42.9	2008-09-30 14:36:59
141253562642987881	18	57.0	2015-05-14 11:17:29
8185812272861618401	19	62.8	2016-10-21 11:19:35

ECM

Digits	B1	Curves
25	50000	65 / 280

Estimated T-Level: 21.2 ⓘ

TF below 2^65 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-13	Oliver Kruse	159DB8740E1154E1	4	2120890	5	3
Verified	2017-11-26	ATH	159DB8740E1154E1	4	2277185	5	3

History

Date	User	Type	Result
2018-09-28	alpertron	NF-PM1	B1=2000000, B2=60000000, E=12
2017-11-26	ATH	C-PRP	M2408587/43354567/8043413663239/141253562642987881/8185812272861618401 : 159DB8740E1154E1 PRP: Verified PRP without proof (not generated)
2017-10-13	Oliver Kruse	C-PRP	M2408587/43354567/8043413663239/141253562642987881/8185812272861618401 : 159DB8740E1154E1 PRP: Verified PRP without proof (not generated)
2016-10-21	TJAOI	F	Factor: 8185812272861618401 / TF: 62-63
2015-05-14	TJAOI	F	Factor: 141253562642987881 / TF: 56-57
2008-09-30	markr	F	Factor: 8043413663239