Some Erdös Number Records

The coauthors of Paul Erdös tend to be prolific collaborators themselves. Here are some extremes taken from our 2020 data.
Coauthors of Erdös with many other coauthors:

                ALON, NOGA MORDECHAI                   520
                HARARY, FRANK*                         315
                COLBOURN, CHARLES JOSEPH               282
                TUZA, ZSOLT                            278
                LUCA, FLORIAN                          277
                SALAMON, PETER                         267
                SHELAH, SAHARON                        262
                WEST, DOUGLAS BRENT                    239
                HSU, DERBIAU FRANK                     216
                GRAHAM, RONALD LEWIS*                  206
                CAMERON, PETER JEPHSON                 190
                SHALLIT, JEFFREY OUTLAW                190
                BOLLOBAS, BELA                         188
                JANSON, SVANTE                         181
                PACH, JANOS                            174
                KOREN, ISRAEL                          166
                HENNING, MICHAEL ANTHONY               161
                KLEITMAN, DANIEL J.                    157
                RODL, VOJTECH                          154
                ODLYZKO, ANDREW MICHAEL                153
                CHUNG, FAN RONG KING (GRAHAM)          152
                SAKS, MICHAEL EZRA                     151


Coauthors of Erdös with many other coauthors
        who are also coauthors of Erdös:

                ALON, NOGA MORDECHAI                    58
                GRAHAM, RONALD LEWIS*                   47
                BOLLOBAS, BELA                          44
                HARARY, FRANK*                          44
                RODL, VOJTECH                           43
                FUREDI, ZOLTAN                          40
                TUZA, ZSOLT                             40
                SOS, VERA TURAN                         39
                GYARFAS, ANDRAS                         35
                SPENCER, JOEL HAROLD                    35
                PACH, JANOS                             34
                CHUNG, FAN RONG KING (GRAHAM)           33
                FAUDREE, RALPH JASPER, JR.*             31
                KLEITMAN, DANIEL J.                     31
                HAJNAL, ANDRAS*                         30
                POMERANCE, CARL BERNARD                 30
                SZEMEREDI, ENDRE                        30


People with Erdös number 2 having many
        coauthors with Erdös number 1:

                Lesniak, Linda M. (Lesniak-Foster)      19
                Duffus, Dwight A.                       17
                Beineke, Lowell Wayne                   15
                Frieze, Alan M.                         15
                Rucinski, Andrzej                       15
                Slater, Peter J.                        15
                Haxell, Penny Evelyn                    14
                Sudakov, Benjamin                       14
                Pudlak, Pavel                           13
                Seymour, Paul D.                        13
                Yuster, Raphael                         13
                Zhu, Xuding                             13
                Barany, Imre                            12
                Katona, Gyula O. H.                     12
                Pintz, Janos                            12
                Reed, Bruce Alan                        12
                Saba, Farrokh                           12
                Shparlinski, Igor E.                    12
                Wallis, Walter Denis                    12
This page was last updated on August 23, 2020.