Question

19 is the sum of why this number is prime number​

Answer 1

Explanation:

19 is the smallest prime p such that p and p2 have the same sum of digits. ... 21 + 32+ 53 + 74 + 115 + 136 + 177 +198 is prime.

Answer 2

Answer:

19 is the smallest prime p such that p and p2 have the same sum of digits. 21 + 32+ 53 + 74 + 115 + 136 + 177 +198 is prime.

Explanation:

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