Q: What are the prime factors of the number 53,003,200?

 A: 2, 5, 157, 211

Why are those the prime factors of the number 53,003,200?

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 53,003,200

53,003,200
Factor Arrows
226,501,600
Factor Arrows
213,250,800
Factor Arrows
26,625,400
Factor Arrows
23,312,700
Factor Arrows
21,656,350
Factor Arrows
2828,175
Factor Arrows
5165,635
Factor Arrows
533,127
Factor Arrows
157211

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, 157, 211

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 5 x 5 x 157 x 211 = 53,003,200

This can also be written as 26 x 52 x 1571 x 2111 = 53,003,200

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


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