A:
Positive:
1 x 6660605217 x 95151503103 x 6466607353 x 1886857721 x 9238012471 x 2695512617 x 25451318319 x 36359
Negative:
-1 x -666060521-7 x -95151503-103 x -6466607-353 x -1886857-721 x -923801-2471 x -269551-2617 x -254513-18319 x -36359
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 666,060,521, 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 | 666,060,521 | |
| -1 | -666,060,521 |
When you multiply two negative numbers together, you get a positive number. That means both the positive and negative numbers are factors of 666,060,521.
Example:
1 x 666,060,521 = 666,060,521
and
-1 x -666,060,521 = 666,060,521
Notice both answers equal 666,060,521
With that explanation out of the way, let's continue. Next, we take the number 666,060,521 and divide it by 2:
666,060,521 ÷ 2 = 333,030,260.5
If the quotient is a whole number, then 2 and 333,030,260.5 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 | 666,060,521 | |
| -1 | -666,060,521 |
Now, we try dividing 666,060,521 by 3:
666,060,521 ÷ 3 = 222,020,173.6667
If the quotient is a whole number, then 3 and 222,020,173.6667 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 | 666,060,521 | |
| -1 | -666,060,521 |
Let's try dividing by 4:
666,060,521 ÷ 4 = 166,515,130.25
If the quotient is a whole number, then 4 and 166,515,130.25 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 | 666,060,521 | |
| -1 | 666,060,521 |
If you did it right, you will end up with this table:
| 1 | 7 | 103 | 353 | 721 | 2,471 | 2,617 | 18,319 | 36,359 | 254,513 | 269,551 | 923,801 | 1,886,857 | 6,466,607 | 95,151,503 | 666,060,521 |
| -1 | -7 | -103 | -353 | -721 | -2,471 | -2,617 | -18,319 | -36,359 | -254,513 | -269,551 | -923,801 | -1,886,857 | -6,466,607 | -95,151,503 | -666,060,521 |
Here are some more numbers to try:
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