13.50Notice the shape pattern

Major 9:

root in LH

RH:

3 – 7 – 9

Minor 9:

root in LH

RH:

♭3 – ♭7 – 9

Dominant 13:

root in LH

RH:

♭7 – 3 – 13

That's a much smaller system to memorize than every chord note individually.