Reply To: Programming
I haven’t checked this, but it looks intriguing! Is it right and can you verify it? Harry
\\\\\\\\\\\\\\\\\\\\ Special 4 digit primes \\\\\\\\\\\\\\\\\\\
The prime 3137 is a special prime in that if each digit is removed from the left
a prime still remains thus 3137, 137, 37, 7 all are prime numbers, furthermore
if each digit is removed from the right thus 3137, 313, 31 and 3 all are prime.
Write code to find the only other 4 digit number having this same property.
(Avoid any 4 digit numbers containing zeros)
Post your code and its answer for all to see