David Jennings (born July 18, 1995) is an american artist, rapper and producer from San Antonio, Texas. He first emerged under the alias XANNY PHANTOM, gaining attention for his work as a producer — most notably for his collaborations with Lil Peep and Boy Froot on tracks like THINKING BOUT U and 300 FEET BELOW.

After some time of shaping sound behind the scenes, Jennings transitioned into releasing his own music, initially under the name ÷☥X♵♹♳♵X☥÷, before gradually moving towards 3 7 13 alias, dropping primarily on Soundcloud.

David’s nickname 3 7 13 (sometimes stylized as 3713) might be a numerical reference derived from the octal numeral system. When converted from base 8 to base 10, the sequence equals 1995 — the artist’s year of birth. This is one possible interpretation, as the artist has not publicly explained the meaning behind the name.