After that, he appeared to more than five hundred of the brothers and sisters at the same time, most of whom are still living, though some have fallen asleep. (NIV)
Then later He showed Himself to more than five hundred brethren at one time, the majority of whom are still alive, but some have fallen asleep [in death]. (AMP)
After that, he was seen of above five hundred brethren at once; of whom the greater part remain unto this present, but some are fallen asleep. (KJV)