Q: What are the prime factors of the number 1,219,136?

 A: 2, 43, 443

Why are those the prime factors of the number 1,219,136?

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 1,219,136

1,219,136
Factor Arrows
2609,568
Factor Arrows
2304,784
Factor Arrows
2152,392
Factor Arrows
276,196
Factor Arrows
238,098
Factor Arrows
219,049
Factor Arrows
43443

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, 43, 443

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 43 x 443 = 1,219,136

This can also be written as 26 x 431 x 4431 = 1,219,136

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


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