Great, thanks Stefan and everyone.

> From: [email protected]
> To: [email protected]
> Date: Fri, 28 Aug 2015 12:03:52 -0700
> Subject: Re: [Numpy-discussion] Numpy FFT.FFT slow with certain samples
> 
> 
> On 2015-08-28 11:51:47, Joseph Codadeen <[email protected]> 
> wrote:
> > my_1_minute_noise_with_gaps_truncated - Array len is 
> > 2646070my_1_minute_noise_with_gaps - Array len is 2649674
> 
> In [6]: from sympy import factorint  In [7]: 
> max(factorint(2646070)) Out[7]: 367  In [8]: 
> max(factorint(2649674)) Out[8]: 1324837 
> 
> Those numbers give you some indication of how long the FFT will 
> take to compute.
> 
> Stéfan
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