56479

This number is a prime.

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

56479 is the largest known prime p (p < k) such that k*p contains only prime digits. Here k = 62387 (62387*56479 = 3523555373) and k is the smallest example where k*p contains only prime digits. Is there a larger prime with this property? [Sariyar]