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authorhabere-et-dispertire <github.eggs@neverbox.com>2022-06-15 01:26:12 +0100
committerGitHub <noreply@github.com>2022-06-15 01:26:12 +0100
commitdd0a009b23e29a9aaf2ae49c554e32fec0492646 (patch)
treece7988d6c23970dc34a9c5a16a0f371b57cbf5d9
parent5cf0768375d1e0df139eec109433726256ed489a (diff)
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Raku: Achilles numbers
-rw-r--r--challenge-169/habere-et-dispetire/raku/ch-2.raku18
1 files changed, 18 insertions, 0 deletions
diff --git a/challenge-169/habere-et-dispetire/raku/ch-2.raku b/challenge-169/habere-et-dispetire/raku/ch-2.raku
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index 0000000000..b387e3905f
--- /dev/null
+++ b/challenge-169/habere-et-dispetire/raku/ch-2.raku
@@ -0,0 +1,18 @@
+#! /usr/bin/env raku
+
+# Achilles numbers
+
+use Prime::Factor;
+
+sub is-achilles ($n) {
+
+ 2 ≤ .min and
+ 1 == [gcd] $_
+ given @(values bag prime-factors $n)
+
+}
+
+say (2 .. ∞)
+ # https://oeis.org/A052486
+ .grep(&is-achilles)
+ .head(20)