senary

One remarkably interesting number system is that exhibited by the Mosquito tribe212 of Central America, who possess an extensive quinary-vigesimal scale containing one binary and three senary compounds.

From The Number Concept Its Origin and Development by Levi Leonard Conant

Thus our duodecimal coinage has led to the practice of counting by sixes, and produced a philological curiosity, a real senary notation.”

From The Number Concept Its Origin and Development by Levi Leonard Conant

In the dialect of the Mille tribe a single trace of senary counting appears, as the numerals given below show:215 6. dildjidji.

From The Number Concept Its Origin and Development by Levi Leonard Conant

The sages applied the senary to the physical man; while the septenary was, for them, the symbol of his immortal spirit.

From Morals and Dogma of the Ancient and Accepted Scottish Rite of Freemasonry by Albert Pike

Finally, in the numerals used by the natives of the Marshall Islands, the following curiously irregular sequence also contains a single senary numeral:216 6. thil thino = 3 + 3.

From The Number Concept Its Origin and Development by Levi Leonard Conant