Q: What are the prime factors of the number 312,212,208?

 A: 2, 3, 7, 11, 17, 4969

Why are those the prime factors of the number 312,212,208?

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 312,212,208

312,212,208
Factor Arrows
2156,106,104
Factor Arrows
278,053,052
Factor Arrows
239,026,526
Factor Arrows
219,513,263
Factor Arrows
36,504,421
Factor Arrows
7929,203
Factor Arrows
1184,473
Factor Arrows
174,969

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, 11, 17, 4969

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 7 x 11 x 17 x 4,969 = 312,212,208

This can also be written as 24 x 31 x 71 x 111 x 171 x 4,9691 = 312,212,208

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


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