Oh my, what a disappointment. I thought for sure they would have a name. Perhaps we can name them?
Three possibilities among many occur to me: "Unidigital Primes", "Monodigital Primes", or "Solodigital Primes".
I'm making a puzzle contest and I'm looking for a name to call them if one exists or can be named.
----- Original Message -----
From: Jens Kruse Andersen
Sent: Thursday, November 12, 2009 6:43 PM
Subject: Re: [PrimeNumbers] Another question
James J Youlton Jr wrote:
> If a prime number does not have the same digit occuring
> within it more than once, what is that number called (and yes
> I know there are a finite number of them all being < 10**9).
They are simply called primes with distinct digits in
"This sequence has 283086 terms, the last being 987654103"
As you apparently know, 3 divides any permutation of 0123456789.
Jens Kruse Andersen
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