66 973 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
15635180192928556736842707644604263143	38	123.6	2021-04-04 05:06:42

ECM

Estimated T-Level: 37.4 ⓘ

TF below 2^119 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Unknown	5095	0
Verified (Factored)		Robert Clark	EA443047C0225095	0
Verified (Factored)		Brian J. Beesley	EA443047C0225095	0
Verified (Factored)	2015-04-11	MadPoo	EA443047C0225095	35998

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-04-06	Joe S.	C0B65FB4377A7419	1	42766	5	3
Verified	2021-04-08	LaurV	C0B65FB4377A7419	1	27024	5	3

History

Date	User	Type	Result
2024-02-04	masser	NF-PP1	Start=106/23, B1=25000000, B2=1775000000
2024-02-04	masser	NF-PP1	Start=6/5, B1=25000000, B2=1775000000
2024-02-02	masser	NF-PP1	Start=2/7, B1=25000000, B2=1775000000
2022-10-18	George Woltman	NF-PM1	B1=1000000000, B2=92454784812390
2022-10-17	George Woltman	NF-PM1	B1=1000000000
2021-04-08	LaurV	C-PRP	M66973/15635180192928556736842707644604263143 : C0B65FB4377A7419 PRP: Verified PRP without proof (small exponent)
2021-04-06	Joe S.	C-PRP	M66973/15635180192928556736842707644604263143 : C0B65FB4377A7419 PRP: Verified PRP without proof (small exponent)
2021-04-04	GAN	F-ECM	Factor: 15635180192928556736842707644604263143 / (ECM curve 1, B1=3000000, B2=300000000, Sigma=2888277273053607)
2021-03-30	Ruslan Borisov	NF	no factor from 2^65 to 2^66
2019-02-14	Yxinity	NF	no factor from 2^64 to 2^65
2019-02-14	Yxinity	NF	no factor from 2^64 to 2^65
2018-01-01	Yxinity	NF	no factor from 2^63 to 2^64
2017-12-31	Yxinity	NF	no factor from 2^63 to 2^64
2016-04-12	Sid & Andy	NF	no factor from 2^62 to 2^63
2016-02-23	LaurV	NF	no factor from 2^58 to 2^59
2016-02-23	LaurV	NF	no factor from 2^57 to 2^58
2015-04-11	MadPoo	C-LL	EA443047C0225095
2014-12-24	Sid & Andy	NF	no factor from 2^61 to 2^62
2013-11-03	lycorn	NF	no factor from 2^60 to 2^61
2012-06-03	alpertron	NF-PM1	B1=100000000, B2=2000000000, E=12
2009-01-23	Sturle Sunde	NF	no factor from 2^59 to 2^60

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