Q: What are the prime factors of the number 313,300,140?

 A: 2, 3, 5, 17, 181, 1697

Why are those the prime factors of the number 313,300,140?

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 313,300,140

313,300,140
Factor Arrows
2156,650,070
Factor Arrows
278,325,035
Factor Arrows
326,108,345
Factor Arrows
55,221,669
Factor Arrows
17307,157
Factor Arrows
1811,697

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, 17, 181, 1697

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 5 x 17 x 181 x 1,697 = 313,300,140

This can also be written as 22 x 31 x 51 x 171 x 1811 x 1,6971 = 313,300,140

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


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