𒐏

𒐏 U+1240F, 𒐏 CUNEIFORM NUMERIC SIGN FOUR U ← 𒐎 [U+1240E] Cuneiform Numbers and Punctuation 𒐐 → [U+12410]

Used here on Wiktionary to indicate the šešig (“addition of 𒊺 (še)”) as a component in the Cuneiform sign section of translingual cuneiform entries.

English Wikipedia has an article on:

List of cuneiform signs

Wikipedia

• R. Borger, Mesopotamisches Zeichenlexikon (MZL), Münster (2003)
• A. Deimel, Šumerisches Lexikon (Deimel), Rome (1947)
• Chr. Rüster, E. Neu, Hethitisches Zeichenlexikon (HZL), Wiesbaden (1989)

Almost certainly an multiplicative compound of 𒎙 (niš, “twenty”) +‎ 𒈫 (min, “two”), i.e. 20×2.

𒐏 • (nimin)

1. forty, 40

• Jagersma, Bram (2010) A Descriptive Grammar of Sumerian‎^[1] (doctoral thesis), page 244
• “𒐏 (nimin)” in ePSD2