Q: What are the prime factors of the number 156,312,354?

 A: 2, 3, 11, 19, 31, 4021

Why are those the prime factors of the number 156,312,354?

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 156,312,354

156,312,354
Factor Arrows
278,156,177
Factor Arrows
326,052,059
Factor Arrows
112,368,369
Factor Arrows
19124,651
Factor Arrows
314,021

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, 19, 31, 4021

We can check our work by multiplying all of the prime factors together: 2 x 3 x 11 x 19 x 31 x 4,021 = 156,312,354

This can also be written as 21 x 31 x 111 x 191 x 311 x 4,0211 = 156,312,354

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


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