Date:
1 = Ena
20 = Ikosi
90 = Eneninda
2 = Dio
21 = IkosiEna and so on
91 = EnenindaEna and so on
3 = Tria
30 = Trianda
100 = Ekato
4 = Tesera
31 = TriandaEna and so on
200 = Diakosia
5 = Pente
40 = Saranda
300 = Triakosia
6 = Exi
41 = SarandaEna and so on
400 = Tetrakosia
7 = Efta
50 = Peninda
500 = Pendakosia
8 = Okto
51 = PenindaEna and so on
600 = Exakosia
9 = Enia
60 = Exinda
700 = Eftakosia
10 = Deka
61 = ExindaEna and so on
800 = Oktakosia
11 = Endeka
70 = Evdominda
900 = Eniakosia
12 = Dodeka
71 = EvdomindaEna and so on
1,000 = Chilia
13 = DekaTria (Deka+Tria)
80 = Ogdonda
2,000 = Dio hill-yia-dez etc.
14 = DekaTesera (Deka+Tesera) etc.
81 = OgdondaEna and so on
1,000,000 = Ena Ekatomirio
First list based on words and phrases taken from Motion, the magazine of the Olympic Airways with additional phrases & modifications added.