Q: What are the prime factors of the number 504,210,140?

 A: 2, 5, 7, 17, 23, 61, 151

Why are those the prime factors of the number 504,210,140?

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 504,210,140

504,210,140
Factor Arrows
2252,105,070
Factor Arrows
2126,052,535
Factor Arrows
525,210,507
Factor Arrows
73,601,501
Factor Arrows
17211,853
Factor Arrows
239,211
Factor Arrows
61151

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, 7, 17, 23, 61, 151

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 7 x 17 x 23 x 61 x 151 = 504,210,140

This can also be written as 22 x 51 x 71 x 171 x 231 x 611 x 1511 = 504,210,140

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


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