My Erdos Number is 4

For details check out this site about The Erdos Number Project. Briefly Paul Erdos is the most highly published with mathmatician with the most number of co-authors. His has an Erdos number of 0. His co-authors have an Erdos number of 1. Anyone who co-authors with them gets a number of 2, and so on. From that site, a frequency of Erdos Numbers is given below

      Erdos number  0  ---      1 person
      Erdos number  1  ---    502 people
      Erdos number  2  ---   5713 people
      Erdos number  3  ---  26422 people
      Erdos number  4  ---  62136 people
      Erdos number  5  ---  66157 people
      Erdos number  6  ---  32280 people
      Erdos number  7  ---  10431 people
      Erdos number  8  ---   3214 people
      Erdos number  9  ---    953 people
      Erdos number 10  ---    262 people
      Erdos number 11  ---     94 people
      Erdos number 12  ---     23 people
      Erdos number 13  ---      4 people
      Erdos number 14  ---      7 people
      Erdos number 15  ---      1 person
      Erdos number 16  ---      0 people

My first paper with George Marsaglia (Erdos Number 3) was

An Algorithm for the Area of the Union of a Collection of Convex Sets, Journal of Statistical Computation and Simulation, 31, No. 1, 46-49, 1989, (with G. Marsaglia and Y. L. Zheng)

My first paper where the only co-author was George Marsaglia was

George Marsaglia, and Arif Zaman, Random Selection of Subsets with Specified Element Probabilities, Communications in Statistics, 19, No. 11, 4419-4434, 1990

George Marsaglia (Erdos Number 3) wrote a paper with George P. H. Styan (Erdos Number 2)

George Marsaglia and George P. H. Styan, Equalities and inequalities for ranks of matrices, Linear and Multilinear Algebra 2 (1974), 269-292.

Goerge P. H. Styan (EN2) was a co-author with Frank Harary (EN1)

Frank Harary (EN1) wrote two joint papers with Paul Erdos