# Factor x^4-1

Factor x^4-1
Rewrite as .
Rewrite as .
Since both terms are perfect squares, factor using the difference of squares formula, where and .
Simplify.
Rewrite as .
Factor.
Since both terms are perfect squares, factor using the difference of squares formula, where and .
Remove unnecessary parentheses.
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### Name

Name one billion four hundred thirty-two million two hundred thirty-four thousand one hundred eighty-five

### Interesting facts

• 1432234185 has 4 divisors, whose sum is 1527716480
• The reverse of 1432234185 is 5814322341
• Previous prime number is 15

### Basic properties

• Is Prime? no
• Number parity odd
• Number length 10
• Sum of Digits 33
• Digital Root 6

### Name

Name one billion three hundred ninety million seven hundred sixty-three thousand five hundred eight

### Interesting facts

• 1390763508 has 32 divisors, whose sum is 4184326944
• The reverse of 1390763508 is 8053670931
• Previous prime number is 347

### Basic properties

• Is Prime? no
• Number parity even
• Number length 10
• Sum of Digits 42
• Digital Root 6

### Name

Name one billion one hundred twenty-three million one hundred sixty-one thousand four hundred thirty-one

### Interesting facts

• 1123161431 has 8 divisors, whose sum is 1284111264
• The reverse of 1123161431 is 1341613211
• Previous prime number is 2693

### Basic properties

• Is Prime? no
• Number parity odd
• Number length 10
• Sum of Digits 23
• Digital Root 5