Il numero 1603, milleseicentotré in Italiano, in Inglese si dice one thousand six hundred three.
Il numero ordinale 1603° in inglese si dice one thousand six hundred third.
1594: one thousand five hundred ninety-four
1595: one thousand five hundred ninety-five
1596: one thousand five hundred ninety-six
1597: one thousand five hundred ninety-seven
1598: one thousand five hundred ninety-eight
1599: one thousand five hundred ninety-nine
1600: one thousand six hundred
1601: one thousand six hundred one
1602: one thousand six hundred two
1604: one thousand six hundred four
1605: one thousand six hundred five
1606: one thousand six hundred six
1607: one thousand six hundred seven
1608: one thousand six hundred eight
1609: one thousand six hundred nine
1610: one thousand six hundred ten
1611: one thousand six hundred eleven
1612: one thousand six hundred twelve