Two-sided primes up to 69

Two-sided primes: Prime which is left-truncatable prime and right-truncatable prime.

There is 7 two-sided primes smaller than 69.

Checkout two-sided primes up to: 100, 500, 1000, 10000.

List#

2, 3, 5, 7, 23, 37, 53

Table#

 1234567
1 - 72357233753
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