Q: What are the prime factors of the number 3,671,472?

 A: 2, 3, 7, 223

Why are those the prime factors of the number 3,671,472?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 3,671,472

3,671,472
Factor Arrows
21,835,736
Factor Arrows
2917,868
Factor Arrows
2458,934
Factor Arrows
2229,467
Factor Arrows
376,489
Factor Arrows
710,927
Factor Arrows
71,561
Factor Arrows
7223

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

2, 3, 7, 223

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 7 x 7 x 7 x 223 = 3,671,472

This can also be written as 24 x 31 x 73 x 2231 = 3,671,472

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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