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A prime p is a "lucky number of Euler" if the values of n^2 + n + p are all prime for n from 0 to p-2. There are only six of these and the largest is 41. The others are 2, 3, 5, 11, and 17. [Le Lionnais]


  Submitted: 1999-09-02 18:40:00;   Last Modified: 2009-02-12 17:50:44.

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