Q: What are the prime factors of the number 312,332,032?

 A: 2, 19, 157, 409

Why are those the prime factors of the number 312,332,032?

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 312,332,032

312,332,032
Factor Arrows
2156,166,016
Factor Arrows
278,083,008
Factor Arrows
239,041,504
Factor Arrows
219,520,752
Factor Arrows
29,760,376
Factor Arrows
24,880,188
Factor Arrows
22,440,094
Factor Arrows
21,220,047
Factor Arrows
1964,213
Factor Arrows
157409

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, 19, 157, 409

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 2 x 19 x 157 x 409 = 312,332,032

This can also be written as 28 x 191 x 1571 x 4091 = 312,332,032

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


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