Prime Sign yog lub chaw tsim khoom lag luam tshaj tawm cov khoom siv hauv ntiaj teb.(Prime Sign yog tshwj xeeb hauv kev tsim khoom hauv tsev thiab sab nraum zoov.)

Tau ntau xyoo, Prime Sign tau tsim plaub cov khoom lag luam loj: cov ntaub ntawv luam tawm ua cov khoom lag luam, cov ntaub ntawv zoo nkauj, cov ntaub npuag thiab cov khoom tsim tshiab tshwj xeeb los ntawm peb lub tuam txhab txoj kev loj hlob thiab tsub zuj zuj ntau xyoo.