How many two-digit primes have both their digits non-prime? 6 5 4 3 2

asked Sep 21, 2021 206k views

5 votes

How many two-digit primes have both their digits non-prime?

6 5 4 3 2

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3 votes

Answer:

11, 13, 17, 31, 37, 71, 73, 79, 97 are the two digit numbers which remain prime even on interchanging the digits.

Explanation:

Keith Holloway answered Sep 26, 2021

4.3k points

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