223

This number is a prime.

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

The sum of the digits of first primes up to 223 is 449. Note the prime digits and their squares. [Silva]

The smallest prime showing a repeated prime digit. [Silva]

The smallest prime whose reversal has more than two prime divisors. [Silva]

The smallest prime formed from three prime digits. [Silva]

223 = -01+23+45+67+89. [Silva]