13533264289711320

This number is a composite.

                                                          1353326 4289711320

For x = 13533264289711320, the following values are all prime: 1, x-1; 2, x+1; 3, x^2-x+1; 4, x^2+1; 5, x^2+x+1; 6, x^4-x^3+x^2-x+1; 7, x^4+1; 8, x^4+x^3+x^2+x+1; 9, x^6+x^3+1; 10, x^6+x^5+x^4+x^3+x^2+x+1. This was discovered by Phil Carmody in 2002. [Dobb]