329 177 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
2997853542856900139064502727	28	91.3	2019-03-19 22:51:47

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	447 / 640

Estimated T-Level: 28.5 ⓘ

TF below 2^90 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		David Slowinski	5CC9	0
Verified (Factored)		Unknown	5CC9	0
Verified (Factored)		Klaus Kastens	70130FB47377DCC9	0
Verified (Factored)		Eivind Triel	70130FB47377DCC9	205431
Verified (Factored)	2002-01-22	Dennis Pope	70130FB47377DCC9	284319

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2019-03-19	ATH	F4CEFE247340168E	1	5231	5	3
Verified	2019-03-21	arnaud	F4CEFE247340168E	1	326405	5	3

History

Date	User	Type	Result
2022-03-07	LordJulius	NF	no factor from 2^54 to 2^55
2019-03-21	arnaud	C-PRP	M329177/2997853542856900139064502727 : F4CEFE247340168E PRP: Verified PRP without proof (small exponent)
2019-03-19	ATH	C-PRP	M329177/2997853542856900139064502727 : F4CEFE247340168E PRP: Verified PRP without proof (small exponent)
2019-03-19	alex	F-ECM	Factor: 2997853542856900139064502727 / (ECM curve 262, B1=250000, B2=25000000, Sigma=6993178655702909)
2018-01-27	Gordon Spence	NF	no factor from 2^64 to 2^65
2016-07-13	mikr	NF-PM1	B1=60000000, B2=3000000000, E=12
2015-12-15	Gordon Spence	NF	no factor from 2^63 to 2^64
2015-12-15	Gordon Spence	NF	no factor from 2^62 to 2^63
2015-07-23	NR	NF	no factor from 2^61 to 2^62
2013-03-24	Sid & Andy	NF	no factor from 2^60 to 2^61
2012-01-11	alpertron	NF-PM1	B1=10000000, B2=200000000, E=12
2011-08-06	Joss	NF-PM1	B1=1403236
2009-01-28	Sturle Sunde	NF	no factor from 2^59 to 2^60
2008-12-31	Sturle Sunde	NF	no factor from 2^58 to 2^59