Q: What are the prime factors of the number 56,021,368?

 A: 2, 13, 47, 73, 157

Why are those the prime factors of the number 56,021,368?

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 56,021,368

56,021,368
Factor Arrows
228,010,684
Factor Arrows
214,005,342
Factor Arrows
27,002,671
Factor Arrows
13538,667
Factor Arrows
4711,461
Factor Arrows
73157

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, 13, 47, 73, 157

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 13 x 47 x 73 x 157 = 56,021,368

This can also be written as 23 x 131 x 471 x 731 x 1571 = 56,021,368

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


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