CREATE TABLE table_name_94 (geohash_length NUMBER, lat_bits VARCHAR2, km_error VARCHAR2)

What is the lowest geohash length when the lat bits are less than 7, and the km error of 2500?
SELECT MIN(geohash_length) FROM table_name_94 WHERE lat_bits < 7 AND km_error = "±2500"
SELECT MIN("geohash_length") FROM "table_name_94" WHERE "km_error" = "±2500" AND "lat_bits" < 7