In TeXForm#
TeXForm parses this entry as a character leaf mapped to U+27F6 (LONG RIGHTWARDS ARROW).
\to\rightarrow\longrightarrow\mapsto\xrightarrow\Rightarrow\Leftrightarrow\leftarrow\longmapsto\hookrightarrow\Longrightarrow\implies
\longrightarrowSymbol
The ⟶ symbol (Long rightwards arrow, U+27F6), written as \longrightarrow in LaTeX math mode.