<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>

Second question: *Amoeba dubia*, which if I recall correctly is also known as *Polychaos dubium*, has a genome that is 670 gigabases. While I know nothing about how this is divided among chromosomes, it is reasonable to suspect that a given chromosome would exceed an int32 or even a uint32.

Refs:

 1. http://www.sciencedirect.com/science/article/pii/S0169534703003239
 2. T. Cavalier-Smith, Introduction: the evolutionary significance of genome size, T. Cavalier-Smith, Editor, The Evolution of Genome Size, John Wiley &amp; Sons (1985), pp. 1–36.
 3. C.T. Friz, The biochemical composition of the free-living Amoebae Chaos chaos, Amoeba dubia and Amoeba proteus. Comp. Biochem. Physiol.,  26  (1968), pp. 81–90.