Q: What are the prime factors of the number 158,563,350?

 A: 2, 3, 5, 11, 103, 311

Why are those the prime factors of the number 158,563,350?

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 158,563,350

158,563,350
Factor Arrows
279,281,675
Factor Arrows
326,427,225
Factor Arrows
38,809,075
Factor Arrows
51,761,815
Factor Arrows
5352,363
Factor Arrows
1132,033
Factor Arrows
103311

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, 3, 5, 11, 103, 311

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 5 x 5 x 11 x 103 x 311 = 158,563,350

This can also be written as 21 x 32 x 52 x 111 x 1031 x 3111 = 158,563,350

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


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