Q: What are the prime factors of the number 312,002,208?

 A: 2, 3, 7, 22109

Why are those the prime factors of the number 312,002,208?

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 312,002,208

312,002,208
Factor Arrows
2156,001,104
Factor Arrows
278,000,552
Factor Arrows
239,000,276
Factor Arrows
219,500,138
Factor Arrows
29,750,069
Factor Arrows
33,250,023
Factor Arrows
31,083,341
Factor Arrows
7154,763
Factor Arrows
722,109

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, 22109

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 3 x 7 x 7 x 22,109 = 312,002,208

This can also be written as 25 x 32 x 72 x 22,1091 = 312,002,208

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


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