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A187605
Primes of the form k^k + k - 1.
7
5, 29, 1978419655660313589123997, 205891132094649000000000000000000000000000029
OFFSET
1,1
COMMENTS
See A058912 for numbers k such that k^k + k - 1 is prime. Subsequence of A231712 (numbers n^n + n - 1). - Jaroslav Krizek, Nov 13 2013
The next prime has 1460 digits. - Jinyuan Wang, Mar 01 2020
MATHEMATICA
Do[p=n^n+n-1; If[PrimeQ[p], Print[p]], {n, 100}]
PROG
(PARI) lista(nn) = for(k=1, nn, if(ispseudoprime(q=k^k+k-1), print1(q, ", "))); \\ Jinyuan Wang, Mar 01 2020
CROSSREFS
KEYWORD
nonn
AUTHOR
Marco Ripà, Mar 11 2011
STATUS
approved