Q: What are the prime factors of the number 143,161,326?

 A: 2, 3, 7, 11, 103291

Why are those the prime factors of the number 143,161,326?

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 143,161,326

143,161,326
Factor Arrows
271,580,663
Factor Arrows
323,860,221
Factor Arrows
37,953,407
Factor Arrows
71,136,201
Factor Arrows
11103,291

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, 7, 11, 103291

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 7 x 11 x 103,291 = 143,161,326

This can also be written as 21 x 32 x 71 x 111 x 103,2911 = 143,161,326

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


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