7833887

This number is a prime.

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

An emirp expressible as the repdigit sum of each prime digit d (222 + 333 + 55555 + 7777777) with the summands concatenating in this order into the smallest prime with each d repeated at least d times (222333555557777777). [Beedassy]