A:
Positive:
1 x 11111120911 x 1010101929 x 383142179 x 1406471319 x 348311869 x 1278612291 x 484994409 x 25201
Negative:
-1 x -111111209-11 x -10101019-29 x -3831421-79 x -1406471-319 x -348311-869 x -127861-2291 x -48499-4409 x -25201
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 111,111,209, it is easier to work with a table - it's called factoring from the outside in.
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 | 111,111,209 | |
| -1 | -111,111,209 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 111,111,209.
Example:
1 x 111,111,209 = 111,111,209
and
-1 x -111,111,209 = 111,111,209
Notice both answers equal 111,111,209
With that explanation out of the way, let's continue. Next, we take the number 111,111,209 and divide it by 2:
111,111,209 ÷ 2 = 55,555,604.5
If the quotient is a whole number, then 2 and 55,555,604.5 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 | 111,111,209 | |
| -1 | -111,111,209 |
Now, we try dividing 111,111,209 by 3:
111,111,209 ÷ 3 = 37,037,069.6667
If the quotient is a whole number, then 3 and 37,037,069.6667 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 | 111,111,209 | |
| -1 | -111,111,209 |
Let's try dividing by 4:
111,111,209 ÷ 4 = 27,777,802.25
If the quotient is a whole number, then 4 and 27,777,802.25 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 | 111,111,209 | |
| -1 | 111,111,209 |
If you did it right, you will end up with this table:
| 1 | 11 | 29 | 79 | 319 | 869 | 2,291 | 4,409 | 25,201 | 48,499 | 127,861 | 348,311 | 1,406,471 | 3,831,421 | 10,101,019 | 111,111,209 |
| -1 | -11 | -29 | -79 | -319 | -869 | -2,291 | -4,409 | -25,201 | -48,499 | -127,861 | -348,311 | -1,406,471 | -3,831,421 | -10,101,019 | -111,111,209 |
Here are some more numbers to try:
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