70007...89221 (30-digits)
This number is a prime.
7000755497 7222633237 9814089221
The smallest prime P formed from the concatenation of the cubes of three consecutive Honaker primes, i.e., {1913^3, 1933^3, 2141^3}. Curiously, P is also expressible as the sum of two squares: (758502607767514^2 + 353198731286095^2). [Bajpai]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell