square number.
http://wiki.answers.com/Q/What_is_the_product_of_a...

A number multiplied by itself is called a square. For example
http://www.chacha.com/question/whatisanumberca...

Well, that would be √13.
http://answers.yahoo.com/question/index?qid=201205...

a x a x a x a = a^4. The number which tells how many time we multiply is called the "exponent" In the example the exponent is 4.
http://answers.yahoo.com/question/index?qid=201301...
