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Prime factors of terms of A127263.
3

%I #11 Jun 07 2021 04:46:00

%S 3,19,571,9137,41113,174763,274081,1236787,7485811,23474953,34630009,

%T 47822393,69171211,92346689,160465489

%N Prime factors of terms of A127263.

%C From _Alexander Adamchuk_, May 14 2010: (Start)

%C 3 divides A127263(n) for n > 1.

%C 19 divides A127263(n) for n > 2. (End)

%e A127263(1) = 1,

%e A127263(2) = 3,

%e A127263(3) = 57 = 3*19,

%e A127263(4) = 32547 = 3*19*571,

%e A127263(5) = 9961491 = 3*19*174763,

%e A127263(6) = 297381939 = 3*19*571*9137.

%Y Cf. A127263, A128677, A128678, A128679, A128680, A128681, A128682, A128683, A128684, A128685, A136373.

%Y Cf. A177813, A177814, A177816, A177817, A177818, A177819, A177820. - _Alexander Adamchuk_, May 14 2010

%K nonn,hard,more

%O 1,1

%A _Alexander Adamchuk_, Dec 27 2007

%E Edited and extended by _Max Alekseyev_, May 14 2010