Not so easy, not so nice, and possibly buggy, as a 1 liner:
print "$_\n" for grep { $n=$_; $_==1 or ( $_%2 and ! grep { $n%$_==0 }
+ (2..int($n/2))) } (1..100);

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In reply to Re: Easy way to list prime numbers 1 to 100 by Akhasha
in thread Easy way to list prime numbers 1 to 100 by l.frankline

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