Q: What are the prime factors of the number 202,254,678?

 A: 2, 3, 17, 53, 4157

Why are those the prime factors of the number 202,254,678?

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 202,254,678

202,254,678
Factor Arrows
2101,127,339
Factor Arrows
333,709,113
Factor Arrows
311,236,371
Factor Arrows
33,745,457
Factor Arrows
17220,321
Factor Arrows
534,157

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, 17, 53, 4157

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 17 x 53 x 4,157 = 202,254,678

This can also be written as 21 x 33 x 171 x 531 x 4,1571 = 202,254,678

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


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