A Note On Perfect Totient Numbers
Department of Applied Mathematics
College of Information Science and Technology
P. R. China
In this note we prove that there are no perfect totient numbers of the
k ≥ 4, where s
= 2a 3b + 1,
r = 2c 3d s + 1,
q = 2e 3f r + 1,
and p = 2g 3h q + 1
are primes with a,c,e,g ≥ 1, and b,d,f,h ≥ 0.
Full version: pdf,
(Concerned with sequence
Received April 14 2009;
revised version received July 18 2009.
Published in Journal of Integer Sequences, August 30 2009.
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