|  |  D.12.1.5 euler Procedure from libraryaksaka.lib(see  aksaka_lib).
 
Example:Usage:
euler(r);
Return:
bigint phi(r), where phi is Eulers phi-function
Note:
first r is factorized with proc PollardRho, then phi(r) is
calculated with the help of phi(p) of every factor p;
 |  | LIB "aksaka.lib";
euler(99991);
==> 99990
 | 
 
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