The biggest palindromic prime

Revision en1, by sevlll, 2021-02-03 20:58:24

Hi!

Today I was surfing Wikipedia and came across this article — Palindromic prime

This article says that the largest known palindromic prime is $10^{474500}$ + $999 * 10^{237249} + 1$.

Well it is easy to see that this number is palindrome, but... why is it prime?

I don't find any proof, and I am really curios — how to proof that this number is prime, when number is quite big?

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en1 sevlll 2021-02-03 20:58:24 483 Initial revision (published)