217

This number is a composite.

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

+ 47 and 89 are primes, as is their concatenation (4789). Inserting the lowly 0 between them transforms the prime into a power, i.e. 47089, the square of 217. [Trotter]

Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell