- duodecimal, tridecimal, quadrodecimal, pentadecimal, heptadecimal,
octodecimal, nona decimal,
vigesimal and
further are discussed... Das & Lanjewar...
- of
vigesimal days,
octodecimal months, and base-52
years forming a round. In addition, a long
count of
vigesimal days,
octodecimal winal, then base 24...
- 70 80 90 →
Cardinal eighteen Ordinal 18th (eighteenth)
Numeral system octodecimal Factorization 2 × 32
Divisors 1, 2, 3, 6, 9, 18 Gr****
numeral ΙΗ´ Roman...
