Q: What are the prime factors of the number 661,541,450?

 A: 2, 5, 47, 89, 3163

Why are those the prime factors of the number 661,541,450?

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 661,541,450

661,541,450
Factor Arrows
2330,770,725
Factor Arrows
566,154,145
Factor Arrows
513,230,829
Factor Arrows
47281,507
Factor Arrows
893,163

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, 47, 89, 3163

We can check our work by multiplying all of the prime factors together: 2 x 5 x 5 x 47 x 89 x 3,163 = 661,541,450

This can also be written as 21 x 52 x 471 x 891 x 3,1631 = 661,541,450

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


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