OFFSET
1,3
COMMENTS
LINKS
Paul Pollack and Carl Pomerance, Phi, primorials, and Poisson, arXiv:2001.06727 [math.NT], 2020.
PROG
(PARI) a(n)=my(ph=eulerphi(n)); my(p=1); forprime(q=2, , if(ph%q, return(p), p=q))
CROSSREFS
KEYWORD
nonn
AUTHOR
Charles R Greathouse IV, Feb 09 2020
STATUS
approved