A storage system, including a storage device configured to store a plurality of encoded values, wherein each value of the plurality of encoded values has a predetermined value length and is within a predetermined range, and wherein the predetermined range is not a power of 2; and at least one processor configured to: group the plurality of encoded values into a codeword; obtain a plurality of bit chunks, wherein each bit chunk of the plurality of bit chunks represents a corresponding encoded value of the plurality of encoded values, and wherein a length of the each bit chunk is selected from among one or more predetermined bit chunk lengths which are determined based on the predetermined range; select a variable-length prefix from among a plurality of variable-length prefixes, wherein the variable-length prefix indicates bit chunk lengths of the plurality of bit chunks; obtain a compressed codeword including the variable-length prefix and the plurality of bit chunks; and decode the plurality of encoded values based on the compressed codeword.