FWIW, using int($num) does produce an integer (albeit the wrong one): 
$num = 1.44115188075868217e17;
print int($num);
__END__
144115188075868224

[download]
I get the same number with print int( $string2 ).

This is perl, v5.8.8 built for x86_64-linux-thread-multi

In reply to Re: Exasperated with 64-bit integer builds of perl by rhesa
in thread Exasperated with 64-bit integer builds of perl by syphilis

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