Q: What are the prime factors of the number 146,540,240?

 A: 2, 5, 7, 11, 23789

Why are those the prime factors of the number 146,540,240?

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 146,540,240

146,540,240
Factor Arrows
273,270,120
Factor Arrows
236,635,060
Factor Arrows
218,317,530
Factor Arrows
29,158,765
Factor Arrows
51,831,753
Factor Arrows
7261,679
Factor Arrows
1123,789

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, 7, 11, 23789

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 7 x 11 x 23,789 = 146,540,240

This can also be written as 24 x 51 x 71 x 111 x 23,7891 = 146,540,240

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


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