Q: What are the prime factors of the number 305,561,472?

 A: 2, 3, 59, 13487

Why are those the prime factors of the number 305,561,472?

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 305,561,472

305,561,472
Factor Arrows
2152,780,736
Factor Arrows
276,390,368
Factor Arrows
238,195,184
Factor Arrows
219,097,592
Factor Arrows
29,548,796
Factor Arrows
24,774,398
Factor Arrows
22,387,199
Factor Arrows
3795,733
Factor Arrows
5913,487

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, 59, 13487

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 2 x 3 x 59 x 13,487 = 305,561,472

This can also be written as 27 x 31 x 591 x 13,4871 = 305,561,472

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


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