Q: What are the prime factors of the number 3,619,168?

 A: 2, 7, 107, 151

Why are those the prime factors of the number 3,619,168?

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 3,619,168

3,619,168
Factor Arrows
21,809,584
Factor Arrows
2904,792
Factor Arrows
2452,396
Factor Arrows
2226,198
Factor Arrows
2113,099
Factor Arrows
716,157
Factor Arrows
107151

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, 7, 107, 151

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 7 x 107 x 151 = 3,619,168

This can also be written as 25 x 71 x 1071 x 1511 = 3,619,168

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


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