Q: What are the prime factors of the number 19,176,102?

 A: 2, 3, 11, 17, 211

Why are those the prime factors of the number 19,176,102?

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 19,176,102

19,176,102
Factor Arrows
29,588,051
Factor Arrows
33,196,017
Factor Arrows
31,065,339
Factor Arrows
3355,113
Factor Arrows
3118,371
Factor Arrows
339,457
Factor Arrows
113,587
Factor Arrows
17211

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, 11, 17, 211

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 3 x 11 x 17 x 211 = 19,176,102

This can also be written as 21 x 35 x 111 x 171 x 2111 = 19,176,102

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


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