Q: What are the prime factors of the number 122,545,150?

 A: 2, 5, 7, 13, 23, 1171

Why are those the prime factors of the number 122,545,150?

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 122,545,150

122,545,150
Factor Arrows
261,272,575
Factor Arrows
512,254,515
Factor Arrows
52,450,903
Factor Arrows
7350,129
Factor Arrows
1326,933
Factor Arrows
231,171

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, 7, 13, 23, 1171

We can check our work by multiplying all of the prime factors together: 2 x 5 x 5 x 7 x 13 x 23 x 1,171 = 122,545,150

This can also be written as 21 x 52 x 71 x 131 x 231 x 1,1711 = 122,545,150

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


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