Q: What are the prime factors of the number 312,422,418?

 A: 2, 3, 7, 11, 431, 523

Why are those the prime factors of the number 312,422,418?

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 312,422,418

312,422,418
Factor Arrows
2156,211,209
Factor Arrows
352,070,403
Factor Arrows
317,356,801
Factor Arrows
72,479,543
Factor Arrows
11225,413
Factor Arrows
431523

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, 7, 11, 431, 523

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 7 x 11 x 431 x 523 = 312,422,418

This can also be written as 21 x 32 x 71 x 111 x 4311 x 5231 = 312,422,418

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


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