Q: What are the prime factors of the number 661,122,162?

 A: 2, 3, 43, 94907

Why are those the prime factors of the number 661,122,162?

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 661,122,162

661,122,162
Factor Arrows
2330,561,081
Factor Arrows
3110,187,027
Factor Arrows
336,729,009
Factor Arrows
312,243,003
Factor Arrows
34,081,001
Factor Arrows
4394,907

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, 43, 94907

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 43 x 94,907 = 661,122,162

This can also be written as 21 x 34 x 431 x 94,9071 = 661,122,162

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


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