Q: What are the prime factors of the number 313,242,500?

 A: 2, 5, 107, 1171

Why are those the prime factors of the number 313,242,500?

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 313,242,500

313,242,500
Factor Arrows
2156,621,250
Factor Arrows
278,310,625
Factor Arrows
515,662,125
Factor Arrows
53,132,425
Factor Arrows
5626,485
Factor Arrows
5125,297
Factor Arrows
1071,171

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, 107, 1171

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 5 x 5 x 5 x 107 x 1,171 = 313,242,500

This can also be written as 22 x 54 x 1071 x 1,1711 = 313,242,500

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


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