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Left-truncatable primes

Left-truncatable prime is a prime number which, in a given base, contains no 0, and if the leading leftmost digit is successively removed, then all resulting numbers are prime.

For example, 9137, since 9137, 137, 37 and 7 are all prime.

There are known to be 4260 decimal left-truncatable primes

First 20: 2, 3, 5, 7, 13, 17, 23, 37, 43, 47, 53, 67, 73, 83, 97, 113, 137, 167, 173, 197

Checkout list of first: 10, 50, 100, 500, 1000 left-truncatable primes. You can also check all left-truncatable primes.

Checkout left-truncatable primes up to: 100, 500, 1000, 10000.

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