Redshift and SFR of galaxies observed by PRIMAger. PRIMA surveys will not be limited to extremely bright objects, but will start to probe normal star-forming galaxies. We show the distribution of SFR as a function of redshift for the Deep (top) and Wide (bottom) surveys using the conservative depths (see Table 1) and the SPRITZ simulation. The cyan dashed lines indicate the 50% completeness level, while the orange solid and the dash-dotted lines show the SFR of a typical main sequence star-forming galaxy with log(M/M_*) = 10.5 and log(M/M_*) = 11.5, respectively. These were derived considering the M_* − SFR relation by Speagle et al. (2014) at different redshifts.