Greek Numerical Prefixes
UNITS TEENS TWENTIES THIRTIES-PLUS HUNDREDS THOUSANDS
10 deca- 20 icosa- 30 triaconta- 100 hecaton- 1000 chilia-
1 mono- 11 hendeca- 21 icosimono- 31 triacontamono- 200 diacosi- 2000 dischilia-
2 di- 12 dodeca- 22 icosidi- 32 triacontadi- 300 triacosi- 3000 trischilia-
3 tri- 13 trideca- 23 icositri- 33 triacontatri- 400 tetracosi- 4000 tetrakischilia-
4 tetra- 14 tetradeca- 24 icositetra- 40 tetraconta- 500 pentacosi- 5000 pentakischilia-
5 penta- 15 pentadeca- 25 icosipenta- 50 penteconta- 600 hexacosi- 6000 hexakischilia-
6 hexa- 16 hexadeca- 26 icosihexa- 60 hexeconta- 700 heptacosi- 7000 heptakischilia-
7 hepta- 17 heptadeca- 27 icosihepta- 70 hebdomeconta- 800 octacosi- 8000 octakischilia-
8 octa- 18 octadeca- 28 icosiocta- 80 ogdoeconta- 900 enacosi- 9000 enakischilia-
9 ennea- 19 enneadeca- 29 icosiennea- 90 eneneconta- 10000 myria-