Q: What are the prime factors of the number 145,740,480?

 A: 2, 3, 5, 151813

Why are those the prime factors of the number 145,740,480?

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 145,740,480

145,740,480
Factor Arrows
272,870,240
Factor Arrows
236,435,120
Factor Arrows
218,217,560
Factor Arrows
29,108,780
Factor Arrows
24,554,390
Factor Arrows
22,277,195
Factor Arrows
3759,065
Factor Arrows
5151,813

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, 151813

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 3 x 5 x 151,813 = 145,740,480

This can also be written as 26 x 31 x 51 x 151,8131 = 145,740,480

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


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