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$MinNumber

$MinNumber
gives the minimum positive arbitrary-precision number that can be represented on a particular computer system.
The nonzero number of minimum magnitude representable on this computer system:
Smaller numbers yield underflows:
The nonzero number of minimum magnitude representable on this computer system:
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Smaller numbers yield underflows:
In[1]:=
Click for copyable input
Out[1]=
$MinNumber has the smallest possible exponent:
$MinNumber×$MaxNumber is approximately 1:
$MinNumber is not a machine number:
It does have precision equivalent to that of machine numbers:
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