%AZang, Weicheng%AYang, Hongjing%AHan, Cheongho%ALee, Chung-Uk%AUdalski, Andrzej%AGould, Andrew%AMao, Shude%AZhang, Xiangyu%AZhu, Wei%AAlbrow, Michael%AChung, Sun-Ju%AHwang, Kyu-Ha%AJung, Youn%ARyu, Yoon-Hyun%AShin, In-Gu%AShvartzvald, Yossi%AYee, Jennifer%ACha, Sang-Mok%AKim, Dong-Jin%AKim, Hyoun-Woo%AKim, Seung-Lee%ALee, Dong-Joo%ALee, Yongseok%APark, Byeong-Gon%APogge, Richard%AMróz, Przemek%ASkowron, Jan%APoleski, Radoslaw%ASzymański, Michał%ASoszyński, Igor%APietrukowicz, Paweł%AKozłowski, Szymon%AUlaczyk, Krzysztof%ARybicki, Krzysztof%AIwanek, Patryk%AWrona, Marcin%AGromadzki, Mariusz%BJournal Name: Monthly Notices of the Royal Astronomical Society; Journal Volume: 515; Journal Issue: 1 %D2022%I %JJournal Name: Monthly Notices of the Royal Astronomical Society; Journal Volume: 515; Journal Issue: 1 %K %MOSTI ID: 10346367 %PMedium: X %TSystematic KMTNet planetary anomaly search. IV. Complete sample of 2019 prime-field %XABSTRACT We report the complete statistical planetary sample from the prime fields (Γ ≥ 2 h−1) of the 2019 Korea Microlensing Telescope Network (KMTNet) microlensing survey. We develop the optimized KMTNet AnomalyFinder algorithm and apply it to the 2019 KMTNet prime fields. We find a total of 13 homogeneously selected planets and report the analysis of three planetary events, KMT-2019-BLG-(1042,1552,2974). The planet–host mass ratios, q, for the three planetary events are 6.34 × 10−4, 4.89 × 10−3, and 6.18 × 10−4, respectively. A Bayesian analysis indicates the three planets are all cold giant planets beyond the snow line of their host stars. The 13 planets are basically uniform in log q over the range −5.0 < log q < −1.5. This result suggests that the planets below qbreak = 1.7 × 10−4 proposed by the MOA-II survey may be more common than previously believed. This work is an early component of a large project to determine the KMTNet mass-ratio function, and the whole sample of 2016–2019 KMTNet events should contain about 120 planets. %0Journal Article