Squares from Concatenated Prime Factors

For certain integers, you can make a
perfect square by concatenating its prime factors in ascending order. For example, the prime factors of 183 are 3 and 61. Concatenating these in ascending order gives 361, and 361 is 19^2. Find all integers below 1000 which behave in this way. |

Site design/maintenance: Dave EllisE-mail me!

Last Updated: January 17th, 2010.