Q: What are the prime factors of the number 315,342,216?

 A: 2, 3, 7, 137, 4567

Why are those the prime factors of the number 315,342,216?

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 315,342,216

315,342,216
Factor Arrows
2157,671,108
Factor Arrows
278,835,554
Factor Arrows
239,417,777
Factor Arrows
313,139,259
Factor Arrows
34,379,753
Factor Arrows
7625,679
Factor Arrows
1374,567

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, 137, 4567

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 7 x 137 x 4,567 = 315,342,216

This can also be written as 23 x 32 x 71 x 1371 x 4,5671 = 315,342,216

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


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