[seqfan] Re: A053709

[Max Alekseyev]

Hi Hans,

Which term you refer to?

If d <=n, then both n!+d and n!-d are divisible by d and thus cannot be prime.

Regards,
Max


On Wed, Jul 23, 2014 at 12:34 PM, Hans Havermann <gladhobo at teksavvy.com> wrote:
> https://oeis.org/A053709
> Prime balanced factorials: n! is the mean of its 2 closest primes.
>
> "The difference between n! and its 2 closest primes must exceed n."
> Why? It's not true for one of the terms.
>
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