Re: Strange behaviour with numbers in exponential notation

[Christian Gollwitzer]

Am 02.09.16 um 17:51 schrieb Marco Sulla:
10**26 - 1
99999999999999999999999999
1e26 - 1
1e+26

10**26 is computed with integer arithmetics. Python has bigints (i.e. as 
big as the memory allows)

1e26 denotes a *floating point number* Floating point has finite 
precision, in CPython it is a 64bit IEEE number. The largest exact 
integer there is 2**53 (~10^16), everything beyond cannot be accurately 
represented.

        Christian

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