Happy primes up to 416

Happy primes: Primes that eventually reach 1 under iteration of: x -> sum of squares of digits of x.

There is 22 happy primes smaller than 416.

Checkout happy primes up to: 100, 500, 1000, 10000.

List#

7, 13, 19, 23, 31, 79, 97, 103, 109, 139, 167, 193, 239, 263, 293, 313, 331, 367, 379, 383, 397, 409

Table#

 12345678910
1 - 107131923317997103109139
11 - 20167193239263293313331367379383
21 - 30397409        
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