727 views.
From wiki:
727 is a "prime number, palindromic prime, Lucky prime"
What's a lucky prime? From wiki:
"A lucky prime is a lucky number that is prime."
What's a luck number (in mathematics)? From wiki:
"In number theory, a lucky number is a natural number in a set which is generated by a "sieve" similar to the Sieve of Eratosthenes that generates the primes."
What's a ..... oh,
you look it up!
