10718757

This number is a composite.

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

10^49 + 10718757 is the smallest 50-digit number m such that 10 m + 1, 10 m + 3, 10 m + 7 & 10 m + 9 are primes. [Firoozbakht]