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13533264289711320 (another Prime Pages' Curiosity) |
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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]
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