2 887 711 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
1973642563147691142324313	25	80.7	2019-06-21 04:55:14

ECM

Digits	B1	Curves
25	50000	16 / 280

Estimated T-Level: 20.3 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	1999-06-06	Joseph C. Bender	34C871D23A505899	2297472
Verified (Factored)	1999-07-27	Earl Malmrose	34C871D23A505899	0
Verified (Factored)	2018-09-26	kkmrkkblmbrbk	34C871D23A505899	2041372

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2019-06-21	Niels_Mache_Nextcloud	D02AC63DB0F92393	1	989638	5	3
Verified	2019-06-22	kkmrkkblmbrbk	D02AC63DB0F92393	1	706032	5	3

History

Date	User	Type	Result
2023-04-18	Kevin_9611	NF-PM1	B1=720000, B2=839565090
2019-06-22	kkmrkkblmbrbk	C-PRP	M2887711/1973642563147691142324313 : D02AC63DB0F92393 PRP: Verified PRP without proof (not generated)
2019-06-21	Niels_Mache_Nextcloud	C-PRP	M2887711/1973642563147691142324313 : D02AC63DB0F92393 PRP: Verified PRP without proof (not generated)
2019-06-21	Corey	F-ECM	Factor: 1973642563147691142324313 / (ECM curve 1, B1=50000, B2=5000000)
2019-01-11	chuenkit	NF	no factor from 2^67 to 2^68
2018-09-26	kkmrkkblmbrbk	C-LL	34C871D23A505899
2017-11-13	Gordon Spence	NF	no factor from 2^66 to 2^67
2017-10-13	Joss	NF-PM1	B1=597196, B2=5971960, E=6
2017-02-25	Joss	NF-PM1	B1=298598, B2=2985980, E=6
2016-12-23	Joss	NF-PM1	B1=207360
2016-12-16	Joss	NF-PM1	B1=172800
2016-10-07	Joss	NF-PM1	B1=120000, B2=4320000
2016-10-07	Joss	NF-PM1	B1=120000, B2=3600000, E=6
2016-02-23	Mark Rose	NF	no factor from 2^1 to 2^60
2015-11-27	omylist	NF	no factor from 2^65 to 2^66
2015-04-21	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-04-21	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-01-10	dbaugh	NF	no factor from 2^62 to 2^63
2012-01-20	Grant McCracken	NF	no factor from 2^61 to 2^62
2009-02-12	Sturle Sunde	NF	no factor from 2^60 to 2^61

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