A:
Positive:
1 x 15312512319 x 805921783 x 184488189 x 17205071091 x 1403531577 x 970991691 x 905537387 x 20729
Negative:
-1 x -153125123-19 x -8059217-83 x -1844881-89 x -1720507-1091 x -140353-1577 x -97099-1691 x -90553-7387 x -20729
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 153,125,123, 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 | 153,125,123 | |
| -1 | -153,125,123 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 153,125,123.
Example:
1 x 153,125,123 = 153,125,123
and
-1 x -153,125,123 = 153,125,123
Notice both answers equal 153,125,123
With that explanation out of the way, let's continue. Next, we take the number 153,125,123 and divide it by 2:
153,125,123 ÷ 2 = 76,562,561.5
If the quotient is a whole number, then 2 and 76,562,561.5 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 | 153,125,123 | |
| -1 | -153,125,123 |
Now, we try dividing 153,125,123 by 3:
153,125,123 ÷ 3 = 51,041,707.6667
If the quotient is a whole number, then 3 and 51,041,707.6667 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 | 153,125,123 | |
| -1 | -153,125,123 |
Let's try dividing by 4:
153,125,123 ÷ 4 = 38,281,280.75
If the quotient is a whole number, then 4 and 38,281,280.75 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 | 153,125,123 | |
| -1 | 153,125,123 |
If you did it right, you will end up with this table:
| 1 | 19 | 83 | 89 | 1,091 | 1,577 | 1,691 | 7,387 | 20,729 | 90,553 | 97,099 | 140,353 | 1,720,507 | 1,844,881 | 8,059,217 | 153,125,123 |
| -1 | -19 | -83 | -89 | -1,091 | -1,577 | -1,691 | -7,387 | -20,729 | -90,553 | -97,099 | -140,353 | -1,720,507 | -1,844,881 | -8,059,217 | -153,125,123 |
Here are some more numbers to try:
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