CREATE TABLE table_30289 ("Religion" TEXT, "Births" FLOAT, "Conversions" TEXT, "New adherents per year" FLOAT, "Growth rate" TEXT)

Name the least births for conversion being 26,333
SELECT MIN("Births") FROM table_30289 WHERE "Conversions" = '26,333'
SELECT MIN("Births") FROM "table_30289" WHERE "Conversions" = '26,333'