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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
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Task/Truncatable-primes/Mathematica/truncatable-primes.math Normal file
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@ -0,0 +1,6 @@
LeftTruncatablePrimeQ[n_] := Times @@ IntegerDigits[n] > 0 &&
And @@ PrimeQ /@ ToExpression /@ StringJoin /@
Rest[Most[NestList[Rest, #, Length[#]] &[Characters[ToString[n]]]]]
RightTruncatablePrimeQ[n_] := Times @@ IntegerDigits[n] > 0 &&
And @@ PrimeQ /@ ToExpression /@ StringJoin /@
Rest[Most[NestList[Most, #, Length[#]] &[Characters[ToString[n]]]]]