piano chord
A♯5
A♯1E♯5
Root and fifth, no third at all — neither major nor minor, which is the point.
Written the other way round it is B♭5 — the same twelve keys on a piano, a different piece of notation.
What is true of it
A♯5 is A♯ and E♯ — 1 and 5 counted from A♯.