6 380 849 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
26007810538896282814602769	26	84.4	2020-03-25 23:34:05

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)	1999-05-16	Albrecht Heeffer	31382A372210F6D8	4887339
Verified (Factored)	2001-06-17	Stephen Wood	31382A372210F6D8	5652504

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-04-05	M Miller	2EB860F4640D9CB5	1	1164083	5	3
Verified	2020-04-06	-Anonymous-	2EB860F4640D9CB5	1	1020741	5	3

P-1 factors

Date	Factor	B1	B2
2020-03-25	26007810538896282814602769	700000	15000000

History

Date	User	Type	Result
2020-04-06	-Anonymous-	C-PRP	M6380849/26007810538896282814602769 : 2EB860F4640D9CB5 PRP: Verified PRP without proof (not generated)
2020-04-05	M Miller	C-PRP	M6380849/26007810538896282814602769 : 2EB860F4640D9CB5 PRP: Verified PRP without proof (not generated)
2020-03-25	takahashi	F-PM1	Factor: 26007810538896282814602769 / (P-1, B1=700000, B2=15000000, E=12)
2018-06-04	ramgeis	NF	no factor from 2^67 to 2^68
2016-04-08	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
2015-10-22	snme2pm1	NF	no factor from 2^65 to 2^66
2014-08-19	lycorn	NF	no factor from 2^64 to 2^65
2014-08-17	Nesowa	NF	no factor from 2^63 to 2^64
2011-07-05	markr	NF-PM1	B1=165000, B2=3547500, E=6