Q: What are the prime factors of the number 55,621,700?

 A: 2, 5, 149, 3733

Why are those the prime factors of the number 55,621,700?

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 55,621,700

55,621,700
Factor Arrows
227,810,850
Factor Arrows
213,905,425
Factor Arrows
52,781,085
Factor Arrows
5556,217
Factor Arrows
1493,733

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, 5, 149, 3733

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 5 x 149 x 3,733 = 55,621,700

This can also be written as 22 x 52 x 1491 x 3,7331 = 55,621,700

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


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