“DIAGONAL Prime Numbers”

The first Diagonals of Prime Numbers presented themselves in this Collection of Patterns:- 5. Digital Prime Diagonals

OUTSIDE the Pyramid I had not even noticed them for a long time:

But we are not used to looking at “Number Diagonals” – neither Top Right to Bottom Left nor Top Left to Bottom Right, as here.

NEXT: Primes as “Diagonal Sums”