Q: What are the prime factors of the number 70,300?

 A: 2, 5, 19, 37

Why are those the prime factors of the number 70,300?

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 70,300

70,300
Factor Arrows
235,150
Factor Arrows
217,575
Factor Arrows
53,515
Factor Arrows
5703
Factor Arrows
1937

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, 19, 37

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 5 x 19 x 37 = 70,300

This can also be written as 22 x 52 x 191 x 371 = 70,300

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


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