Respuesta :
To find out if a number is prime, it can only have two factors, 1 and itself.
Once you divide a number up into prime factors, all of the number's factors are simply all combinations of these prime factors.
For example: the prime factors of 20 are 22 x 51 . The exponent 1 is normally not written;
For example: the prime factors of 20 are 22 x 51 . The exponent 1 is normally not written;