Pan base non-primes: Difference between revisions
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Thundergnat (talk | contribs) m (→{{header|Raku}}: make code match output) |
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my @np = 4,6,8,9, |lazy (11..*).hyper.grep( -> $n { ($n.substr(*-1) eq '0') || (1 < [gcd] $n.comb».Int) || none (2..$n).map: { try "$n".&from-base($_).is-prime } } ); |
my @np = 4,6,8,9, |lazy (11..*).hyper.grep( -> $n { ($n.substr(*-1) eq '0') || (1 < [gcd] $n.comb».Int) || none (2..$n).map: { try "$n".&from-base($_).is-prime } } ); |
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put "First 50 pan-base |
put "First 50 pan-base composites:\n" ~ @np[^50].batch(10)».fmt("%3s").join: "\n"; |
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put "\nFirst 20 odd pan-base |
put "\nFirst 20 odd pan-base composites:\n" ~ @np.grep(* % 2)[^20].batch(10)».fmt("%3s").join: "\n"; |
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my $threshold = 2500; |
my $threshold = 2500; |
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put "\nCount of pan-base |
put "\nCount of pan-base composites up to and including $threshold: " ~ +@np.&upto($threshold); |
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put "Percent odd up to and including $threshold: " ~ +@np.&upto($threshold).grep(* % 2) / +@np.&upto($threshold) × 100; |
put "Percent odd up to and including $threshold: " ~ +@np.&upto($threshold).grep(* % 2) / +@np.&upto($threshold) × 100; |