I am a member of the American Mathematical Society.
An amusing (but informative) AMS site it their
Collaboration Distance page.
From it I find that my Andrew Granville number is 3, my Doron Zeilberger number is 3, my Karl Dilcher number is (of course) 1, my Jon Borwein number is 2, my Neil Sloane number is 4, and my Michel Waldschmidt number is also 4.
Going back a long way in time I find that my Gauss number is 6. It's a pity I don't have a path back to Jacobi, since Karl Dilcher and I introduced the notions of Gauss, and then Jacobi primes, in our eight and tenth papers