Find prime n such that reversed n is also prime: Difference between revisions
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Using the definition of is_prime at [[Erd%C5%91s-primes#jq]]:
<lang jq>#
# If . is null the stream is unbounded;
# otherwise only integers less than . are considered.
def reversible_primes:
def r: tostring|explode|reverse|implode|tonumber;
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</pre>
=={{header|Julia}}==
<lang julia>using Primes
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