My Erdös number is less than or equal to 4:

• Paul Erdös (Erdös Number = 0)
• Jean-Louis Nicolas (EN= 1)
  P. Erdös, J.L. Nicolas
  Repartition des nombres superabondants. Seminaire Delange-Pisot-Poitou (15e annee: 1973/74), Theorie des nombres, Fasc. 1, Exp. No. 5, 18 pp. Secretariat Mathematique, Paris 1975

• Gilbert Levitt (EN=2)
  G. Levitt and J.L. Nicolas
  On the maximum order of torsion elements in GL(n, Z) and Aut(F_n)
  J. Algebra 208 (1998), no. 2, 630--642.

• Karen Vogtmann (EN=3)
  G. Levitt and K. Vogtmann
  A Whitehead algorithm for surface groups.
  Topology 39 (2000), no. 6, 1239--1251.

• James Conant (EN=4)
  J. Conant and K. Vogtmann
  On a theorem of Kontsevich
  Algebraic and Geometric Topology 3 (2003), paper no. 42, pages 1167-1224.