Q: What are the prime factors of the number 312,021,450?

 A: 2, 3, 5, 13, 23, 773

Why are those the prime factors of the number 312,021,450?

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 312,021,450

312,021,450
Factor Arrows
2156,010,725
Factor Arrows
352,003,575
Factor Arrows
317,334,525
Factor Arrows
35,778,175
Factor Arrows
51,155,635
Factor Arrows
5231,127
Factor Arrows
1317,779
Factor Arrows
23773

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, 13, 23, 773

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 5 x 5 x 13 x 23 x 773 = 312,021,450

This can also be written as 21 x 33 x 52 x 131 x 231 x 7731 = 312,021,450

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


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