After seeing a reference to his own value on Ivan’s page, I’ve found out that my Erdös number is no more than 4 (via an IEEE paper with Eugene G. Gath, who wrote a paper with Thomas J. Laffey, who wrote a paper with LeRoy B. Beasley, who wrote with Paul Erdös), using the MathSciNet author search and collaboration distance calculator.

The Erdös number (more info here) is the number of links required to connect scholars to mathematician Paul Erdös, a prolific writer who co-authored over 1500 papers with more than 500 authors, and this number is commonly referenced in social network materials.