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Mathematica > Math Typesetting Options & Tweaking >

Built-in Mathematica Symbol

NumberSeparator

NumberSeparator
is an option for NumberForm and related functions which gives the string to insert at breaks between digits.

NumberSeparator->"s" specifies that the string s should be inserted at every break between digits specified by DigitBlock.

NumberSeparator->{"sleft", "sright"} specifies different strings to be used on the left and right of the decimal point.

The default separator is a comma (,):

Out[1]//NumberForm=

Use spaces instead:

Out[1]//NumberForm=

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