Q: What are the prime factors of the number 53,353,216?

 A: 2, 7, 19, 1567

Why are those the prime factors of the number 53,353,216?

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 53,353,216

53,353,216
Factor Arrows
226,676,608
Factor Arrows
213,338,304
Factor Arrows
26,669,152
Factor Arrows
23,334,576
Factor Arrows
21,667,288
Factor Arrows
2833,644
Factor Arrows
2416,822
Factor Arrows
2208,411
Factor Arrows
729,773
Factor Arrows
191,567

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, 7, 19, 1567

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 7 x 19 x 1,567 = 53,353,216

This can also be written as 28 x 71 x 191 x 1,5671 = 53,353,216

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


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