In popular culture, such as the TV series The Blacklist , "N-13" refers to an unidentified operative or a "ghost" that no one can prove exists.

The Ig Nobel Prize is an annual award that honors achievements that are unusual, seemingly trivial, or outright bizarre. The prizes are intended to be humorous and satirical, rather than serious. They are often awarded in areas that are not typically recognized with prestigious awards, such as peace, literature, or science.

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While the Ig Nobel Prizes are real awards presented annually (usually for genuine scientific achievements that are humorous or unexpected), online compilations often present a static numbered list of "Unusual Awards." In many of these popular viral lists, corresponds to the 2004 Ig Nobel Prize in Biology.

The prizes are presented by the Annals of Improbable Research, a peer-reviewed journal that features research papers on unusual topics. The Ig Nobel Prizes are often presented at a ceremony, which includes a lecture or presentation on the winning research.

By labeling a category as "N.13," creators signal that the recipient is being honored for something unconventional—an "outlier" trait that society usually overlooks or finds too bizarre for a standard award. Other Famous Bizarre Awards