Q: What are the prime factors of the number 97,793,520?

 A: 2, 3, 5, 11, 17, 2179

Why are those the prime factors of the number 97,793,520?

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 97,793,520

97,793,520
Factor Arrows
248,896,760
Factor Arrows
224,448,380
Factor Arrows
212,224,190
Factor Arrows
26,112,095
Factor Arrows
32,037,365
Factor Arrows
5407,473
Factor Arrows
1137,043
Factor Arrows
172,179

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, 17, 2179

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 5 x 11 x 17 x 2,179 = 97,793,520

This can also be written as 24 x 31 x 51 x 111 x 171 x 2,1791 = 97,793,520

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


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