Q: What are the prime factors of the number 611,355,600?

 A: 2, 3, 5, 18869

Why are those the prime factors of the number 611,355,600?

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 611,355,600

611,355,600
Factor Arrows
2305,677,800
Factor Arrows
2152,838,900
Factor Arrows
276,419,450
Factor Arrows
238,209,725
Factor Arrows
312,736,575
Factor Arrows
34,245,525
Factor Arrows
31,415,175
Factor Arrows
3471,725
Factor Arrows
594,345
Factor Arrows
518,869

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, 18869

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 3 x 3 x 5 x 5 x 18,869 = 611,355,600

This can also be written as 24 x 34 x 52 x 18,8691 = 611,355,600

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


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