Consider the form <math><mstyle displaystyle="true"><msup><mrow><mi>x</mi></mrow><mrow><mn>2</mn></mrow></msup><mo>+</mo><mi>b</mi><mi>x</mi><mo>+</mo><mi>c</mi></mstyle></math> . Find a pair of integers whose product is <math><mstyle displaystyle="true"><mi>c</mi></mstyle></math> and whose sum is <math><mstyle displaystyle="true"><mi>b</mi></mstyle></math> . In this case, whose product is <math><mstyle displaystyle="true"><mo>-</mo><mn>5</mn></mstyle></math> and whose sum is <math><mstyle displaystyle="true"><mo>-</mo><mn>4</mn></mstyle></math> .

Write the factored form using these integers.

If any individual factor on the left side of the equation is equal to <math><mstyle displaystyle="true"><mn>0</mn></mstyle></math> , the entire expression will be equal to <math><mstyle displaystyle="true"><mn>0</mn></mstyle></math> .

Set the first factor equal to <math><mstyle displaystyle="true"><mn>0</mn></mstyle></math> .

Add <math><mstyle displaystyle="true"><mn>5</mn></mstyle></math> to both sides of the equation.

Set the next factor equal to <math><mstyle displaystyle="true"><mn>0</mn></mstyle></math> .

Subtract <math><mstyle displaystyle="true"><mn>1</mn></mstyle></math> from both sides of the equation.

The final solution is all the values that make <math><mstyle displaystyle="true"><mrow><mo>(</mo><mi>x</mi><mo>-</mo><mn>5</mn><mo>)</mo></mrow><mrow><mo>(</mo><mi>x</mi><mo>+</mo><mn>1</mn><mo>)</mo></mrow><mo>=</mo><mn>0</mn></mstyle></math> true.

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Name | one billion seventeen million four hundred fifty-seven thousand six |
---|

- 1017457006 has 16 divisors, whose sum is
**1556047584** - The reverse of 1017457006 is
**6007547101** - Previous prime number is
**53**

- Is Prime? no
- Number parity even
- Number length 10
- Sum of Digits 31
- Digital Root 4

Name | four hundred sixty-five million five hundred eighty-one thousand six hundred seventy-eight |
---|

- 465581678 has 4 divisors, whose sum is
**698372520** - The reverse of 465581678 is
**876185564** - Previous prime number is
**2**

- Is Prime? no
- Number parity even
- Number length 9
- Sum of Digits 50
- Digital Root 5

Name | three hundred seven million seven hundred seventy-three thousand nine hundred forty-eight |
---|

- 307773948 has 32 divisors, whose sum is
**705423600** - The reverse of 307773948 is
**849377703** - Previous prime number is
**257**

- Is Prime? no
- Number parity even
- Number length 9
- Sum of Digits 48
- Digital Root 3