Q: What are the prime factors of the number 305,301,360?

 A: 2, 3, 5, 7, 13, 1997

Why are those the prime factors of the number 305,301,360?

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 305,301,360

305,301,360
Factor Arrows
2152,650,680
Factor Arrows
276,325,340
Factor Arrows
238,162,670
Factor Arrows
219,081,335
Factor Arrows
36,360,445
Factor Arrows
51,272,089
Factor Arrows
7181,727
Factor Arrows
725,961
Factor Arrows
131,997

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, 7, 13, 1997

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 5 x 7 x 7 x 13 x 1,997 = 305,301,360

This can also be written as 24 x 31 x 51 x 72 x 131 x 1,9971 = 305,301,360

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


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