6 244 033 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
8171585678579872091791	22	72.8	2019-10-13 05:24:29

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)	1999-05-09	mburazin	8CC50C8513550DBC	2481369
Verified (Factored)	2000-06-28	Aaron B	8CC50C8513550DBC	3006143
Verified (Factored)	2002-02-17	Aaron B	8CC50C8513550DBC	2001762

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2019-10-14	mnd9	B87D323409CB186A	1	1271793	5	3
Verified	2019-10-15	G.de Groot	B87D323409CB186A	1	5409888	5	3

P-1 factors

Date	Factor	B1	B2
2019-10-13	8171585678579872091791	600000	12000000

History

Date	User	Type	Result
2019-10-15	G.de Groot	C-PRP	M6244033/8171585678579872091791 : B87D323409CB186A PRP: Verified PRP without proof (not generated)
2019-10-14	mnd9	C-PRP	M6244033/8171585678579872091791 : B87D323409CB186A PRP: Verified PRP without proof (not generated)
2019-10-13	takahashi	F-PM1	Factor: 8171585678579872091791 / (P-1, B1=600000, B2=12000000, E=12)
2018-06-01	ramgeis	NF	no factor from 2^67 to 2^68
2016-03-22	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
2015-10-14	snme2pm1	NF	no factor from 2^65 to 2^66
2014-09-16	monst	NF	no factor from 2^64 to 2^65
2014-09-12	Nesowa	NF	no factor from 2^63 to 2^64
2013-04-27	Squeeky_Squirrel	NF-PM1	B1=115000, B2=2300000, E=6