Q: What are the prime factors of the number 1,235,584?

 A: 2, 7, 197

Why are those the prime factors of the number 1,235,584?

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 1,235,584

1,235,584
Factor Arrows
2617,792
Factor Arrows
2308,896
Factor Arrows
2154,448
Factor Arrows
277,224
Factor Arrows
238,612
Factor Arrows
219,306
Factor Arrows
29,653
Factor Arrows
71,379
Factor Arrows
7197

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, 7, 197

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 7 x 7 x 197 = 1,235,584

This can also be written as 27 x 72 x 1971 = 1,235,584

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


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