6 326 849 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
45455873444347309848169	23	75.3	2020-03-10 16:57:45

ECM

Digits	B1	Curves
25	50000	6 / 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	Shift
Verified (Factored)	1999-09-07	Michael R. Donaldson	10BD6811621E518A	4408810
Verified (Factored)	2001-05-20	Stephen Wood	10BD6811621E518A	3710746

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-03-10	mrh	2D0F4C11EE19E5E9	1	4777953	5	3
Verified	2020-03-12	arnaud	2D0F4C11EE19E5E9	1	4115176	5	3

P-1 factors

Date	Factor	B1	B2
2020-03-10	45455873444347309848169	700000	15000000

History

Date	User	Type	Result
2020-03-12	arnaud	C-PRP	M6326849/45455873444347309848169 : 2D0F4C11EE19E5E9 PRP: Verified PRP without proof (not generated)
2020-03-10	mrh	C-PRP	M6326849/45455873444347309848169 : 2D0F4C11EE19E5E9 PRP: Verified PRP without proof (not generated)
2020-03-10	takahashi	F-PM1	Factor: 45455873444347309848169 / (P-1, B1=700000, B2=15000000, E=12)
2018-06-04	ramgeis	NF	no factor from 2^67 to 2^68
2016-03-25	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2015-10-19	snme2pm1	NF	no factor from 2^65 to 2^66
2014-08-23	lycorn	NF	no factor from 2^64 to 2^65
2014-08-17	Nesowa	NF	no factor from 2^63 to 2^64
2011-06-18	markr	NF-PM1	B1=160000, B2=3520000, E=6