Q: What are the prime factors of the number 1,656,045?

 A: 3, 5, 29, 47

Why are those the prime factors of the number 1,656,045?

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 1,656,045

1,656,045
Factor Arrows
3552,015
Factor Arrows
3184,005
Factor Arrows
361,335
Factor Arrows
320,445
Factor Arrows
36,815
Factor Arrows
51,363
Factor Arrows
2947

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:

3, 5, 29, 47

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 3 x 5 x 29 x 47 = 1,656,045

This can also be written as 35 x 51 x 291 x 471 = 1,656,045

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


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