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The production of eta' mesons in photon- and hadron-induced reactions hasbeen revisited in view of the recent additions of high-precision data to theworld data base. Based on an effective Lagrangian approach, we have performed acombined analysis of the free and quasi-free gamma N -> eta' N, N N -> N Neta', and pi N -> eta' N reactions. Considering spin-1/2 and -3/2 resonances,we found that a set of above-threshold resonances {S_{11}, P_{11}, P_{13}},with fitted mass values of about M_R=1925, 2130, and 2050 MeV, respectively,and the four-star sub-threshold P_{13}(1720) resonance reproduce best allexisting data for the eta' production processes in the resonance-energy regionconsidered in this work. All three above-threshold resonances found in thepresent analysis are essential and indispensable for the good quality of thepresent fits.

Combined analysis of eta' production reactions: gamma N -> eta' N, N N -> N N eta', and pi N -> eta' N