Truncatable primes: Difference between revisions

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Go solution
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=={{header|PARI/GP}}==
This version builds the truncatable primes with up to k digits in a straightforward fashion. Run time is about 15 milliseconds, almost all of which is I/O.
<lang parigp>left(n)={
my(v=[2,3,5,7],u,t=1,out=0);
for(i=1,n,