Q: What are the prime factors of the number 312,754,680?

 A: 2, 3, 5, 7, 79, 1571

Why are those the prime factors of the number 312,754,680?

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 312,754,680

312,754,680
Factor Arrows
2156,377,340
Factor Arrows
278,188,670
Factor Arrows
239,094,335
Factor Arrows
313,031,445
Factor Arrows
34,343,815
Factor Arrows
5868,763
Factor Arrows
7124,109
Factor Arrows
791,571

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, 79, 1571

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 5 x 7 x 79 x 1,571 = 312,754,680

This can also be written as 23 x 32 x 51 x 71 x 791 x 1,5711 = 312,754,680

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


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