356 387 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
13382878808701591116986795479	29	93.4	2019-04-02 09:55:10

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	596 / 640

Estimated T-Level: 29.7 ⓘ

TF below 2^94 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		David Slowinski	1E4A	0
Verified (Factored)		Unknown	391DE4A	0
Verified (Factored)		Don Thomas	9443B4DB4391DE4A	0
Verified (Factored)		Klaus Kastens	9443B4DB4391DE4A	0
Verified (Factored)		Eivind Triel	9443B4DB4391DE4A	90701
Verified (Factored)	2016-06-01	MadPoo	9443B4DB4391DE4A	233328

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2019-04-03	M8909387	E71F0646FFE28437	1	309122	5	3
Verified	2019-04-03	matzetoni	E71F0646FFE28437	1	981	5	3
Verified	2019-04-04	kkmrkkblmbrbk	E71F0646FFE28437	1	324295	5	3

History

Date	User	Type	Result
2022-03-07	LordJulius	NF	no factor from 2^54 to 2^55
2019-04-04	kkmrkkblmbrbk	C-PRP	M356387/13382878808701591116986795479 : E71F0646FFE28437 PRP: Verified PRP without proof (small exponent)
2019-04-03	matzetoni	C-PRP	M356387/13382878808701591116986795479 : E71F0646FFE28437 PRP: Verified PRP without proof (small exponent)
2019-04-03	M8909387	C-PRP	M356387/13382878808701591116986795479 : E71F0646FFE28437 PRP: Verified PRP without proof (small exponent)
2019-04-02	alex	F-ECM	Factor: 13382878808701591116986795479 / (ECM curve 152, B1=250000, B2=25000000, Sigma=3671403590502509)
2018-02-22	BloodERazor	NF	no factor from 2^64 to 2^65
2018-02-22	Gordon Spence	NF	no factor from 2^64 to 2^65
2016-11-18	mikr	NF-PM1	B1=60000000, B2=3000000000, E=12
2016-06-01	MadPoo	C-LL	9443B4DB4391DE4A
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
2015-07-26	NR	NF	no factor from 2^61 to 2^62
2013-07-01	Sid & Andy	NF	no factor from 2^60 to 2^61
2012-02-22	alpertron	NF-PM1	B1=10000000, B2=200000000, E=12
2011-08-09	Joss	NF-PM1	B1=1265925
2009-01-26	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