The number, 197, is called a circular prime because all rotations of the digits: 197, 971, and 719, are themselves prime.

The decimal number, 585 = 10010010012 (binary), is palindromic in both bases.

The number 3797 has an interesting property. Being prime itself, it is possible to continuously remove digits from left to right, and remain prime at each stage: 3797, 797, 97, and 7. Similarly we can work from right to left: 3797, 379, 37, and 3.

Take the number 192 and multiply it by each of 1, 2, and 3: