Q: What are the prime factors of the number 21,134,064?

 A: 2, 3, 7, 31, 2029

Why are those the prime factors of the number 21,134,064?

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 21,134,064

21,134,064
Factor Arrows
210,567,032
Factor Arrows
25,283,516
Factor Arrows
22,641,758
Factor Arrows
21,320,879
Factor Arrows
3440,293
Factor Arrows
762,899
Factor Arrows
312,029

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, 7, 31, 2029

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 7 x 31 x 2,029 = 21,134,064

This can also be written as 24 x 31 x 71 x 311 x 2,0291 = 21,134,064

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


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