919

This number is a prime.

Just showing those entries submitted by 'Silva': (Click here to show all)

The smallest palindromic prime equal to the difference of consecutive cubes (18^3-17^3). [Silva]

The sum of the digits of first non-trivial palindromic primes up to 919 is another palindromic prime. [Silva]

919 equals 91+81+71+61+51+41+31+21+11+1+11+21+31+41+51+61+71+81+91. [Silva]

919 is the sum of a semiprime number of consecutive semiprimes:221+226+235+237. Curiously 919 results from de projection of a semiprime. [Silva]