<p>This question was inspired by Peter Cock 's tweet</p>

https://twitter.com/pjacock/status/118012750105546752

<p>Most softwares (C, java...) use a int32 (unsigned or not) to store the length of the chromosome. It isn't enough when the length of a chromosome is greater than INT_MAX or UINT_MAX</p>

<pre><code>#  define INT_MAX    2147483647
#  define UINT_MAX    4294967295U
</code></pre>

<p>So my question is:</p>

<ul>
<li>Is there any resource where one can find the length of the chromosomes. Something like <a href='http://bionumbers.hms.harvard.edu/'>BioNumbers</a>.</li>
<li>What's the length of the longest chromosome ? </li>
</ul>

With the publication of [A chromosome-based draft sequence of the hexaploid bread wheat (*Triticum aestivum*) genome][1], the initial release of the Wheat ta 3B chromosome is 774 Mbp (or to be exact, 774434471bp in file ``https://urgi.versailles.inra.fr/download/wheat/3B/ta3bPseudomolecule.genom.fa.gz``)

 [1]: http://dx.doi.org/10.1126/science.1251788