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>20</mn></mstyle></math> and whose sum is <math><mstyle displaystyle="true"><mo>-</mo><mn>1</mn></mstyle></math> .

Write the factored form using these integers.

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Name | one billion two hundred twenty-nine million ninety-two thousand one hundred fifteen |
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- 1229092115 has 4 divisors, whose sum is
**1474910544** - The reverse of 1229092115 is
**5112909221** - Previous prime number is
**5**

- Is Prime? no
- Number parity odd
- Number length 10
- Sum of Digits 32
- Digital Root 5

Name | five hundred million four hundred seventy-one thousand three hundred seventy-two |
---|

- 500471372 has 16 divisors, whose sum is
**1126282320** - The reverse of 500471372 is
**273174005** - Previous prime number is
**17477**

- Is Prime? no
- Number parity even
- Number length 9
- Sum of Digits 29
- Digital Root 2

Name | one billion four hundred seventy-six million nine hundred fifty-three thousand nine hundred eighty-nine |
---|

- 1476953989 has 8 divisors, whose sum is
**1688356800** - The reverse of 1476953989 is
**9893596741** - Previous prime number is
**4523**

- Is Prime? no
- Number parity odd
- Number length 10
- Sum of Digits 61
- Digital Root 7