433 883 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 1 known prime factor. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
8737706504618759658279281	25	82.9	2019-05-14 23:54:17

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	295 / 640

Estimated T-Level: 27.3 ⓘ

TF below 2^86 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		David Slowinski	F18	0
Verified (Factored)		Wolfgang Schildbach	29709816DC99CF18	0
Verified (Factored)		Eivind Triel	29709816DC99CF18	31804
Verified (Factored)	2002-03-10	Dennis Pope	29709816DC99CF18	311335

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2019-05-15	Niels_Mache_Nextcloud	CE47169567ED7D00	1	80431	5	3
Verified	2019-05-15	francijezek	CE47169567ED7D00	1	289255	5	3
Verified	2019-05-15	francijezek	CE47169567ED7D00	1	185940	5	3
Verified	2019-05-16	kkmrkkblmbrbk	CE47169567ED7D00	1	329915	5	3

History

Date	User	Type	Result
2019-05-16	kkmrkkblmbrbk	C-PRP	M433883/8737706504618759658279281 : CE47169567ED7D00 PRP: Verified PRP without proof (small exponent)
2019-05-15	francijezek	C-PRP	M433883/8737706504618759658279281 : CE47169567ED7D00 PRP: Verified PRP without proof (small exponent)
2019-05-15	francijezek	C-PRP	M433883/8737706504618759658279281 : CE47169567ED7D00 PRP: Verified PRP without proof (small exponent)
2019-05-15	Niels_Mache_Nextcloud	C-PRP	M433883/8737706504618759658279281 : CE47169567ED7D00 PRP: Verified PRP without proof (small exponent)
2019-05-14	alex	F-ECM	Factor: 8737706504618759658279281 / (ECM curve 182, B1=250000, B2=25000000, Sigma=1232076560059549)
2018-12-12	Gordon Spence	NF	no factor from 2^65 to 2^66
2017-12-21	Gordon Spence	NF	no factor from 2^64 to 2^65
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2015-11-29	Gordon Spence	NF	no factor from 2^63 to 2^64
2015-11-29	Gordon Spence	NF	no factor from 2^62 to 2^63
2012-12-01	dbaugh	NF	no factor from 2^61 to 2^62
2012-11-27	dbaugh	NF	no factor from 2^60 to 2^61
2012-08-29	markr	NF-PM1	B1=10000000, B2=400000000, E=12
2010-08-16	Rob_Dee	NF-PM1	B1=1000000, B2=2000000, E=6
2010-08-15	Rob_Dee	NF-PM1	B1=500000, B2=1000000
2009-08-26	Carsten Kossendey	NF-PM1	B1=433883