Hi,

Works for me with Math::Prime::Util v.073 on MacOS with Perl 5.30.1 and on Ubuntu with Perl 5.28.1 :

$ echo 147416345806550029415781910597841 > input.txt
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$ perl -Mstrict -Mntheory=:all -wnE 'chomp; say is_prime($_);' input.t
+xt
1
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$ perl -Mstrict -Mntheory=:all -wnE 'chomp; say length($_);' input.txt
33
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Hope this helps!