Q: What are the prime factors of the number 312,230,450?

 A: 2, 5, 7, 31, 4111

Why are those the prime factors of the number 312,230,450?

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 312,230,450

312,230,450
Factor Arrows
2156,115,225
Factor Arrows
531,223,045
Factor Arrows
56,244,609
Factor Arrows
7892,087
Factor Arrows
7127,441
Factor Arrows
314,111

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, 31, 4111

We can check our work by multiplying all of the prime factors together: 2 x 5 x 5 x 7 x 7 x 31 x 4,111 = 312,230,450

This can also be written as 21 x 52 x 72 x 311 x 4,1111 = 312,230,450

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


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