Q: What are the prime factors of the number 15,530,350?

 A: 2, 5, 11, 17, 151

Why are those the prime factors of the number 15,530,350?

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 15,530,350

15,530,350
Factor Arrows
27,765,175
Factor Arrows
51,553,035
Factor Arrows
5310,607
Factor Arrows
1128,237
Factor Arrows
112,567
Factor Arrows
17151

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, 11, 17, 151

We can check our work by multiplying all of the prime factors together: 2 x 5 x 5 x 11 x 11 x 17 x 151 = 15,530,350

This can also be written as 21 x 52 x 112 x 171 x 1511 = 15,530,350

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


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