πεντακόσιοι

Luke 7:41 πεντακόσια, five hundred,

“Two men were debtors to a certain moneylender. One owed him five hundred denarii, and the other fifty.

Here: Five hundred days' wages, which is well over a year and a half of labour. No day labourer could hope to pay that back.

1 Corinthians 15:6 πεντακοσίοις five hundred

After that, He appeared to more than five hundred brothers at once, most of whom are still living, though some have fallen asleep.

Here: A round, large figure. It sets this appearance apart from the private ones to Cephas and James: it was a crowd.