Lester Prosper played four years with the State University of New York College at Old Westbury in the NCAA Division III.

[4] Altogether, Prosper played in 12 countries before suiting up for Columbian in the Philippine Basketball Association in 2019.

He recorded a career-high 45 points in a 123–127 loss to the Barangay Ginebra San Miguel.

[7] He has been a part of Indonesia's national basketball team at the 2021 FIBA Asia Cup qualification.

At his home country's 90–76 victory against Thailand, Prosper collected 19 points and 13 rebounds.