332169193

This number is a prime.

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

An emirp such that continually deleting the outermost digits gives a brilliant number at each step, 3216919 = 1511 × 2129, 21691 = 109 × 199, 169 = 13^2, 6 = 2 × 3. [Loungrides]