luukipu
Luukipu is a traditional counting system used by the indigenous peoples of New Guinea, particularly in the Sepik River region. The system is based on a vigesimal (base-20) numeral system, which is unique among numeral systems worldwide. Luukipu uses a combination of body parts and objects to represent numbers, making it a tactile and visual counting method.
The system is named after the word "luukipu," which means "to count" in the local languages. It
For example, the fingers of one hand represent the numbers 1 to 5, while the fingers of
Luukipu is a living tradition that is still used by some indigenous communities in New Guinea. It