Q: What are the prime factors of the number 102,021,000?

 A: 2, 3, 5, 31, 1097

Why are those the prime factors of the number 102,021,000?

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 102,021,000

102,021,000
Factor Arrows
251,010,500
Factor Arrows
225,505,250
Factor Arrows
212,752,625
Factor Arrows
34,250,875
Factor Arrows
5850,175
Factor Arrows
5170,035
Factor Arrows
534,007
Factor Arrows
311,097

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, 31, 1097

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 5 x 5 x 5 x 31 x 1,097 = 102,021,000

This can also be written as 23 x 31 x 53 x 311 x 1,0971 = 102,021,000

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


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