Homework Help: Math

Posted by B.B. on Monday, June 22, 2009 at 8:02pm.

I have a question that I answered and I'm not sure that it is right. Here is my question: Use a calculator to help you write the prime factorization of 51,051. Here is my answer: If the sum of the digits of the number is divisible by 3, then 3 is a factor of the number. 3x17017 17 is the factor. 3x17x1001 11 is the factor. 3x17x11x91 91 us the product of 7 and 13. 3x17x11x7x13. Is this correct? If not could you explain what I am doing wrong? Thanks.

Math - bobpursley, Monday, June 22, 2009 at 8:19pm
correct. I would have started with 51
1001 x 51
11 x 91
7x13

then break up 51 into 3,17

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