A:
Positive:
1 x 15129297711 x 1375390771 x 2130887307 x 492811631 x 239767781 x 1937173377 x 448016941 x 21797
Negative:
-1 x -151292977-11 x -13753907-71 x -2130887-307 x -492811-631 x -239767-781 x -193717-3377 x -44801-6941 x -21797
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 151,292,977, 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 | 151,292,977 | |
| -1 | -151,292,977 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 151,292,977.
Example:
1 x 151,292,977 = 151,292,977
and
-1 x -151,292,977 = 151,292,977
Notice both answers equal 151,292,977
With that explanation out of the way, let's continue. Next, we take the number 151,292,977 and divide it by 2:
151,292,977 ÷ 2 = 75,646,488.5
If the quotient is a whole number, then 2 and 75,646,488.5 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 | 151,292,977 | |
| -1 | -151,292,977 |
Now, we try dividing 151,292,977 by 3:
151,292,977 ÷ 3 = 50,430,992.3333
If the quotient is a whole number, then 3 and 50,430,992.3333 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 | 151,292,977 | |
| -1 | -151,292,977 |
Let's try dividing by 4:
151,292,977 ÷ 4 = 37,823,244.25
If the quotient is a whole number, then 4 and 37,823,244.25 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 | 151,292,977 | |
| -1 | 151,292,977 |
If you did it right, you will end up with this table:
| 1 | 11 | 71 | 307 | 631 | 781 | 3,377 | 6,941 | 21,797 | 44,801 | 193,717 | 239,767 | 492,811 | 2,130,887 | 13,753,907 | 151,292,977 |
| -1 | -11 | -71 | -307 | -631 | -781 | -3,377 | -6,941 | -21,797 | -44,801 | -193,717 | -239,767 | -492,811 | -2,130,887 | -13,753,907 | -151,292,977 |
Here are some more numbers to try:
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