;Definitions
In mathematics, '''additive primes''' are prime numbers for which the sum of their decimal digits are also primes.


;Task
Write a program to determine (and show here) all '''additive primes''' less than '''500'''.

Optionally, show the '''number''' of additive primes.


;Also see:
:* &nbsp; the OEIS entry: &nbsp; [https://oeis.org/A046704 A046704 additive primes].
:* &nbsp; the prime-numbers entry: &nbsp; [https://prime-numbers.info/list/first-100-additive-primes additive primes].
:* &nbsp; the geeks for geeks entry: [https://www.geeksforgeeks.org/additive-prime-number/ additive prime number].
:* &nbsp; the prime-numbers fandom: [https://prime-numbers.fandom.com/wiki/Additive_Primes additive primes].
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