362 281 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
3213754790528951269701998603743	31	101.3	2019-04-04 19:10:26

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	438 / 640

Estimated T-Level: 28.4 ⓘ

TF below 2^89 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		David Slowinski	377C	0
Verified (Factored)		Jeff Luck	0C61DAC5D184B77C	0
Verified (Factored)		Klaus Kastens	0C61DAC5D184B77C	0
Verified (Factored)		Eivind Triel	0C61DAC5D184B77C	178816
Verified (Factored)	2016-06-01	MadPoo	0C61DAC5D184B77C	127241

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2019-04-05	matzetoni	D521A0D74BC4C800	1	13712	5	3
Verified	2019-04-09	Justine V.	D521A0D74BC4C800	1	61161	5	3

History

Date	User	Type	Result
2022-03-07	LordJulius	NF	no factor from 2^54 to 2^55
2019-04-09	Justine V.	C-PRP	M362281/3213754790528951269701998603743 : D521A0D74BC4C800 PRP: Verified PRP without proof (small exponent)
2019-04-05	matzetoni	C-PRP	M362281/3213754790528951269701998603743 : D521A0D74BC4C800 PRP: Verified PRP without proof (small exponent)
2019-04-04	alex	F-ECM	Factor: 3213754790528951269701998603743 / (ECM curve 188, B1=250000, B2=25000000, Sigma=2625764001777986)
2018-02-22	Gordon Spence	NF	no factor from 2^64 to 2^65
2018-02-14	BloodERazor	NF	no factor from 2^64 to 2^65
2016-11-25	mikr	NF-PM1	B1=60000000, B2=3000000000, E=12
2016-06-01	MadPoo	C-LL	0C61DAC5D184B77C
2015-12-21	Gordon Spence	NF	no factor from 2^63 to 2^64
2015-12-21	Gordon Spence	NF	no factor from 2^62 to 2^63
2015-08-13	NR	NF	no factor from 2^61 to 2^62
2013-05-11	lycorn	NF	no factor from 2^60 to 2^61
2012-03-08	alpertron	NF-PM1	B1=10000000, B2=200000000, E=12
2012-03-05	Joss	NF-PM1	B1=1549107
2011-08-14	Joss	NF-PM1	B1=1239285
2009-02-06	Sturle Sunde	NF	no factor from 2^59 to 2^60
2008-12-29	Sturle Sunde	NF	no factor from 2^58 to 2^59