Q: What are the prime factors of the number 531,145,450?

 A: 2, 5, 11, 17, 56807

Why are those the prime factors of the number 531,145,450?

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 531,145,450

531,145,450
Factor Arrows
2265,572,725
Factor Arrows
553,114,545
Factor Arrows
510,622,909
Factor Arrows
11965,719
Factor Arrows
1756,807

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, 5, 11, 17, 56807

We can check our work by multiplying all of the prime factors together: 2 x 5 x 5 x 11 x 17 x 56,807 = 531,145,450

This can also be written as 21 x 52 x 111 x 171 x 56,8071 = 531,145,450

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


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