Prim hit 15 of 19 shots.
Isiaih Mosley had 26 points for Missouri State (16-5, 12-5 Missouri Valley Conference). Jared Ridder added 11 points. Demarcus Sharp had six rebounds and six assists.
Jawaun Newton scored a career-high 26 points for the Purple Aces (8-15, 6-11), who have now lost seven games in a row. Shamar Givance added 21 points and seven assists. Evan Kuhlman had 16 points.
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