Q: What are the prime factors of the number 51,737,400?

 A: 2, 3, 5, 11, 13, 67

Why are those the prime factors of the number 51,737,400?

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 51,737,400

51,737,400
Factor Arrows
225,868,700
Factor Arrows
212,934,350
Factor Arrows
26,467,175
Factor Arrows
32,155,725
Factor Arrows
3718,575
Factor Arrows
3239,525
Factor Arrows
547,905
Factor Arrows
59,581
Factor Arrows
11871
Factor Arrows
1367

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, 11, 13, 67

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 3 x 5 x 5 x 11 x 13 x 67 = 51,737,400

This can also be written as 23 x 33 x 52 x 111 x 131 x 671 = 51,737,400

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


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