Q: What are the prime factors of the number 146,255,920?

 A: 2, 5, 19, 96221

Why are those the prime factors of the number 146,255,920?

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 146,255,920

146,255,920
Factor Arrows
273,127,960
Factor Arrows
236,563,980
Factor Arrows
218,281,990
Factor Arrows
29,140,995
Factor Arrows
51,828,199
Factor Arrows
1996,221

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, 5, 19, 96221

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 19 x 96,221 = 146,255,920

This can also be written as 24 x 51 x 191 x 96,2211 = 146,255,920

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


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