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A363024 Primes of the form 3^(k-1) - 2^k. 2

%I #33 Jun 04 2023 21:12:20

%S 11,179,601,1931,10456158899,617669101316651,984770866999239144049,

%T 2153693958571958138940251,1570042898793851235488822819,

%U 14130386090585813000157964091,11972515182561981102976512358583456508049,19088056323407826758511836230558252318494847619

%N Primes of the form 3^(k-1) - 2^k.

%C a(23) has 1117 digits. - _Michael S. Branicky_, May 26 2023

%H Michael S. Branicky, <a href="/A363024/b363024.txt">Table of n, a(n) for n = 1..22</a>

%e a(1) = 3^3 - 2^4 = 27 - 16 = 11 (prime).

%e a(2) = 3^5 - 2^6 = 243 - 64 = 179 (prime).

%t Select[Table[3^(k - 1) - 2^k, {k, 1 , 100}], PrimeQ]

%Y Prime terms in A003063.

%Y Cf. A162714, A363375, A162715 (subsequence).

%K nonn

%O 1,1

%A _Sébastien Tao_, May 13 2023

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Last modified May 13 21:51 EDT 2024. Contains 372523 sequences. (Running on oeis4.)