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A260568 Numbers n such that (n^71+1)/(n+1) is prime. 1

%I #15 Sep 08 2022 08:46:13

%S 46,94,99,189,226,236,244,372,387,390,409,410,424,442,478,540,574,608,

%T 611,644,653,695,707,846,868,1036,1248,1336,1374,1395,1418,1424,1549,

%U 1665,1737,1856,1866,1880,1917,1937,2105,2114,2126,2141,2166,2202,2217,2274

%N Numbers n such that (n^71+1)/(n+1) is prime.

%H Tim Johannes Ohrtmann, <a href="/A260568/b260568.txt">Table of n, a(n) for n = 1..10000</a>

%t Select[Range[1, 10000], PrimeQ[(#^71 + 1)/(# + 1)] &]

%o (PARI) for(n=1,10000, if(isprime((n^71+1)/(n+1)), print1(n,", ")))

%o (Magma) [n: n in [1..10000] |IsPrime((n^71 + 1) div (n + 1))]

%Y Cf. A055494, A246392, A250174, A250178, A250181, A250185, A250187, A250193, A260558-A260573.

%K nonn

%O 1,1

%A _Tim Johannes Ohrtmann_, Jul 29 2015

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Last modified April 25 08:27 EDT 2024. Contains 371964 sequences. (Running on oeis4.)