Count in factors: Difference between revisions

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=={{header|Perl}}==
Typically one would use a module for this. Note that these modules all return an empty list for '1'. This should be efficient to 50+ digits:{{libheader|ntheory}}
<lang perl>use ntheory qw/factor/;
print "$_ = ", join(" x ", factor($_)), "\n" for 1000000000000000000 .. 1000000000000000010;</lang>
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