Q: What are the prime factors of the number 314,042,400?

 A: 2, 3, 5, 7, 31, 67

Why are those the prime factors of the number 314,042,400?

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 314,042,400

314,042,400
Factor Arrows
2157,021,200
Factor Arrows
278,510,600
Factor Arrows
239,255,300
Factor Arrows
219,627,650
Factor Arrows
29,813,825
Factor Arrows
33,271,275
Factor Arrows
31,090,425
Factor Arrows
3363,475
Factor Arrows
572,695
Factor Arrows
514,539
Factor Arrows
72,077
Factor Arrows
3167

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, 5, 7, 31, 67

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 3 x 5 x 5 x 7 x 31 x 67 = 314,042,400

This can also be written as 25 x 33 x 52 x 71 x 311 x 671 = 314,042,400

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


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