On 10 May 2002, he calculated the 13th root of a 100-digit number in 13.55 seconds, beating the record held by Willem Klein (88.8 seconds) and the somewhat less official record of Gert Mittring (39 seconds).
Valeska Gert | Gert Mittring | Gert Handberg | Gert Fröbe | Gert Bettens | Gert and Daisy | Gert Verheyen | Gert Sellheim | Gert Postel | Gert Nygårdshaug | Gert-Jan Theunisse | Gert Heinrich Wollheim | Gert Fylking | Gert-Dietmar Klause | Gert Bongers |