Q: What are the factor combinations of the number 111,783?

 A:
Positive:   1 x 1117833 x 372617 x 1596921 x 5323
Negative: -1 x -111783-3 x -37261-7 x -15969-21 x -5323


How do I find the factor combinations of the number 111,783?

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 111,783, 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.

1 111,783
-1 -111,783

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 111,783.

Example:
1 x 111,783 = 111,783
and
-1 x -111,783 = 111,783
Notice both answers equal 111,783

With that explanation out of the way, let's continue. Next, we take the number 111,783 and divide it by 2:

111,783 ÷ 2 = 55,891.5

If the quotient is a whole number, then 2 and 55,891.5 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:

1 111,783
-1 -111,783

Now, we try dividing 111,783 by 3:

111,783 ÷ 3 = 37,261

If the quotient is a whole number, then 3 and 37,261 are factors. In this case, the quotient is a whole number. Write them in the table inside the other two factors like the below example. Don't forget to write the negative numbers too!

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

1 3 37,261 111,783
-1 -3 -37,261 -111,783

Let's try dividing by 4:

111,783 ÷ 4 = 27,945.75

If the quotient is a whole number, then 4 and 27,945.75 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 3 37,261 111,783
-1 -3 -37,261 111,783
Keep dividing by the next highest number until you cannot divide anymore.

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

137215,32315,96937,261111,783
-1-3-7-21-5,323-15,969-37,261-111,783

More Examples

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