- Jul 31, 2013I gather that Mr. Brennen meant the list to exclude powers of 10 from his remark on searching base 79, and this would be correct.

--- On Tue, 7/30/13, Jack Brennen <jfb@...> wrote:

> From: Jack Brennen <jfb@...>

> Subject: Re: [PrimeNumbers] Re: seeking smallest 'forward concatenation prime' for power of 79

> To: "djbroadhurst" <d.broadhurst@...>

> Cc: primenumbers@yahoogroups.com

> Date: Tuesday, July 30, 2013, 5:46 PM

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> I divined the "lesser problem" from the

> base 10 curiosity previously linked.

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> Basically, take all of the positive integers that can be

> obtained

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> by starting with a power of 10 and concatenating consecutive

> increasing

>

> numbers:

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> 10

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> 1011

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> 101112

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> 10111213

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> 1011121314

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> 100

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> 100101

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> 100101102

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> 1000

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> 10001001

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> 100010011002

>

> ...

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> The smallest such prime is the 140 digit number linked as a

> prime

>

> curio in James' first post on this subject, consisting

> of the ten

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> consecutive numbers from 10^13 to 10^13+9 concatenated.

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> The fundamental question to this thread is to find the

> smallest such

>

> prime when operating in base 79. I assume that the trivial

> example

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> of 10(base 79) is excluded, although it is prime.

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> I ended up searching up to about 6500 decimal digits without

> finding

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> such a prime.

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> On 7/30/2013 3:53 PM, djbroadhurst wrote:

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> > --- In primenumbers@yahoogroups.com,

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> > Phil Carmody <thefatphil@...> wrote:

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> >

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> >>> In base n, the number of primes beginning with

> a power of n

>

> >>> that are a concatenation of simply decremented

> numbers that

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> >>> are less than the smallest prime that is a

> similar concatenation

>

> >>> beginning with a power of n and proceeding by

> increments instead.

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> >>

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> >> simplify the horrendous description above

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> > James' logorrhea is utterly baffling, to me.

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> > I am usually able to understand definitions

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> > posted on this list, even when they are obfuscated.

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> > But the logorrheic convolution above defeats me.

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> > Only sharp minds, like Jack's, seem able to decode

> it.

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> >

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> > Please, Jack, might you give us lesser mortals some

> idea of

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> > what you have divined from James' verbiage?

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> >

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> > David

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> > ------------------------------------

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> >

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> > Unsubscribe by an email to: primenumbers-unsubscribe@yahoogroups.com

>

> > The Prime Pages : http://primes.utm.edu/

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> >

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> > Yahoo! Groups Links

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