The F sharp minor thirteenth chord is a 6-note chord consisting of the notes F#, A, C#, E, G# and D#.
You can see these notes highlighted in the interactive piano chart below.
The chord itself is often abbreviated as F#m13.
Interactive piano diagram for the F sharp minor thirteenth chord
Chords that are a subset of F#m13. These contain less notes but all of them are included in F#m13.