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Primes of the form 10n^3-1.
1

%I #6 Sep 08 2022 08:46:00

%S 79,269,1249,5119,13309,33749,79999,138239,175759,243889,548719,

%T 851839,911249,1105919,1249999,2053789,3285089,3732479,5927039,

%U 8573749,8847359,10612079,11248639,18158479,22999679,26280719,27439999,29242069

%N Primes of the form 10n^3-1.

%H Vincenzo Librandi, <a href="/A201036/b201036.txt">Table of n, a(n) for n = 1..1000</a>

%t Select[Table[10n^3-1,{n,1,4000}],PrimeQ]

%o (Magma) [a: n in [1..200] | IsPrime(a) where a is 10*n^3-1]

%K nonn,easy

%O 1,1

%A _Vincenzo Librandi_, Nov 26 2011