Commas can't be in the title of a page about a year, no matter how big it is. But you can create a redirect that uses commas, and is therefore more readable.

For technical reasons, the names of articles about years cannot contain commas. {{timeline}} and its associated templates require "clean" numbers to function properly. This is one instance in which the argument, "We should name the article exactly how it is in the primary source" fails. So: 100000000000000 must be the name of the article, but a more visually-friendly 100,000,000,000,000 may be created as a redirect for use within the body of articles. That said, editors may never use a comma when referring to a year that is shorter than five digits; it's always 2020 and 9034, never 2,020 or 9,034.

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