Forgot password? New user? Sign up

Existing user? Log in

As $a$ ranged over all positive integers, what is/are the value(s) of

$\gcd(a^2 -a-1, a^2 + a + 1 ) ?$

Notation: $\gcd(\cdot)$ denotes the greatest common divisor function.

Problem Loading...

Note Loading...

Set Loading...