require v5.16;
use Test::More qw(no_plan);

for(51..66)
 {my $s = sprintf("%b", 2**$_-1);
  ok length($s) == $_;
 }

[download]

gives me:

# Looks like you failed 12 tests of 16.
ok 1
ok 2
ok 3
not ok 4
not ok 5
not ok 6
not ok 7
not ok 8
not ok 9
not ok 10
not ok 11
not ok 12
not ok 13
ok 14
not ok 15
not ok 16
1..16

[download]

Is this something to worry about?

In reply to Converting 2**54-1 to Binary by philiprbrenan

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.