Q: What are the factor combinations of the number 151,029,379?

 A:
Positive:   1 x 151029379919 x 164341
Negative: -1 x -151029379-919 x -164341


How do I find the factor combinations of the number 151,029,379?

Unfortunately, there's not simple formula to identifying all of the factors of a number and it can be a tedious process when trying to identify the divisors of larger numbers. To find the factor combinations of the number 151,029,379, it is easier to work with a table - it's called factoring from the outside in.

Outside in Factoring

We start by creating a table and writing 1 on the left side and then the number we're trying to find the factors for on the right side in a table. Then, below that, write the numbers as a negative as well.

1 151,029,379
-1 -151,029,379

Why are the negative numbers included?

When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 151,029,379.

Example:
1 x 151,029,379 = 151,029,379
and
-1 x -151,029,379 = 151,029,379
Notice both answers equal 151,029,379

With that explanation out of the way, let's continue. Next, we take the number 151,029,379 and divide it by 2:

151,029,379 ÷ 2 = 75,514,689.5

If the quotient is a whole number, then 2 and 75,514,689.5 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.

Here is what our table should look like at this step:

1 151,029,379
-1 -151,029,379

Now, we try dividing 151,029,379 by 3:

151,029,379 ÷ 3 = 50,343,126.3333

If the quotient is a whole number, then 3 and 50,343,126.3333 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.

Here is what our table should look like at this step:

1 151,029,379
-1 -151,029,379

Let's try dividing by 4:

151,029,379 ÷ 4 = 37,757,344.75

If the quotient is a whole number, then 4 and 37,757,344.75 are factors. In this case, the quotient is not a whole number. Don't write anything down and try the next divisor.

Here is what our table should look like at this step:

1 151,029,379
-1 151,029,379
Keep dividing by the next highest number until you cannot divide anymore.

If you did it right, you will end up with this table:

1919164,341151,029,379
-1-919-164,341-151,029,379

More Examples

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