Q: What are the prime factors of the number 10,515,200?

 A: 2, 5, 31, 53

Why are those the prime factors of the number 10,515,200?

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 10,515,200

10,515,200
Factor Arrows
25,257,600
Factor Arrows
22,628,800
Factor Arrows
21,314,400
Factor Arrows
2657,200
Factor Arrows
2328,600
Factor Arrows
2164,300
Factor Arrows
282,150
Factor Arrows
241,075
Factor Arrows
58,215
Factor Arrows
51,643
Factor Arrows
3153

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, 5, 31, 53

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 5 x 5 x 31 x 53 = 10,515,200

This can also be written as 28 x 52 x 311 x 531 = 10,515,200

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


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