Il numero 503, cinquecentotré in Italiano, in Inglese si dice five hundred three.
Il numero ordinale 503° in inglese si dice five hundred third.
494: four hundred ninety-four
495: four hundred ninety-five
496: four hundred ninety-six
497: four hundred ninety-seven
498: four hundred ninety-eight
499: four hundred ninety-nine
500: five hundred
501: five hundred one
502: five hundred two
504: five hundred four
505: five hundred five
506: five hundred six
507: five hundred seven
508: five hundred eight
509: five hundred nine
510: five hundred ten
511: five hundred eleven
512: five hundred twelve