Q: What are the factor combinations of the number 313,003,409?

 A:
Positive:   1 x 31300340929 x 1079322147 x 6659647131 x 23893391363 x 2296431753 x 1785533799 x 823916157 x 50837
Negative: -1 x -313003409-29 x -10793221-47 x -6659647-131 x -2389339-1363 x -229643-1753 x -178553-3799 x -82391-6157 x -50837


How do I find the factor combinations of the number 313,003,409?

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 313,003,409, 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.

1 313,003,409
-1 -313,003,409

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 313,003,409.

Example:
1 x 313,003,409 = 313,003,409
and
-1 x -313,003,409 = 313,003,409
Notice both answers equal 313,003,409

With that explanation out of the way, let's continue. Next, we take the number 313,003,409 and divide it by 2:

313,003,409 ÷ 2 = 156,501,704.5

If the quotient is a whole number, then 2 and 156,501,704.5 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:

1 313,003,409
-1 -313,003,409

Now, we try dividing 313,003,409 by 3:

313,003,409 ÷ 3 = 104,334,469.6667

If the quotient is a whole number, then 3 and 104,334,469.6667 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:

1 313,003,409
-1 -313,003,409

Let's try dividing by 4:

313,003,409 ÷ 4 = 78,250,852.25

If the quotient is a whole number, then 4 and 78,250,852.25 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:

1 313,003,409
-1 313,003,409
Keep dividing by the next highest number until you cannot divide anymore.

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

129471311,3631,7533,7996,15750,83782,391178,553229,6432,389,3396,659,64710,793,221313,003,409
-1-29-47-131-1,363-1,753-3,799-6,157-50,837-82,391-178,553-229,643-2,389,339-6,659,647-10,793,221-313,003,409

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