Subhotosh Khan
Advanced Member
USA
9116 Posts 
Posted  09/19/2007 : 14:57:28

quote: Originally posted by shawnewa2
i need to know how to find the prime factorization of 825 can anyone help me with this problem.
Since the number ends with 5  it must be divisible by 5.
Since the digits added (8+2+5=15) is divisible by 3  it must be divisible by 3.
Divide these two factors out  show us what you get. 

