A:
Positive:
1 x 15100251111 x 1372750161 x 2475451139 x 1086349671 x 2250411529 x 987591619 x 932698479 x 17809
Negative:
-1 x -151002511-11 x -13727501-61 x -2475451-139 x -1086349-671 x -225041-1529 x -98759-1619 x -93269-8479 x -17809
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 151,002,511, 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 | 151,002,511 | |
| -1 | -151,002,511 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 151,002,511.
Example:
1 x 151,002,511 = 151,002,511
and
-1 x -151,002,511 = 151,002,511
Notice both answers equal 151,002,511
With that explanation out of the way, let's continue. Next, we take the number 151,002,511 and divide it by 2:
151,002,511 ÷ 2 = 75,501,255.5
If the quotient is a whole number, then 2 and 75,501,255.5 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 | 151,002,511 | |
| -1 | -151,002,511 |
Now, we try dividing 151,002,511 by 3:
151,002,511 ÷ 3 = 50,334,170.3333
If the quotient is a whole number, then 3 and 50,334,170.3333 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 | 151,002,511 | |
| -1 | -151,002,511 |
Let's try dividing by 4:
151,002,511 ÷ 4 = 37,750,627.75
If the quotient is a whole number, then 4 and 37,750,627.75 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 | 151,002,511 | |
| -1 | 151,002,511 |
If you did it right, you will end up with this table:
| 1 | 11 | 61 | 139 | 671 | 1,529 | 1,619 | 8,479 | 17,809 | 93,269 | 98,759 | 225,041 | 1,086,349 | 2,475,451 | 13,727,501 | 151,002,511 |
| -1 | -11 | -61 | -139 | -671 | -1,529 | -1,619 | -8,479 | -17,809 | -93,269 | -98,759 | -225,041 | -1,086,349 | -2,475,451 | -13,727,501 | -151,002,511 |
Here are some more numbers to try:
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