15 lines
498 B
Text
15 lines
498 B
Text
The Smarandache prime-digital sequence (SPDS for brevity) is the sequence of primes whose digits are themselves prime.
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For example 257 is an element of this sequence because it is prime itself and its digits: 2, 5 and 7 are also prime.
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;Task
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* Show the first 25 SPDS primes.
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* Show the hundredth SPDS prime.
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;See also:
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* [[oeis:A019546|OEIS A019546: Primes whose digits are primes.]]
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* https://www.scribd.com/document/214851583/On-the-Smarandache-prime-digital-subsequence-sequences
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<br><br>
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