þrjátíu

From þrjá (“three”) +‎ tíu (“ten”).

þrjátíu (indeclinable)

1. thirty
   • Genesis 5:3 (Icelandic, English)

     Adam lifði hundrað og þrjátíu ár. Þá gat hann son í líking sinni, eftir sinni mynd, og nefndi hann Set.

     When Adam had lived 130 years, he had a son in his own likeness, in his own image; and he named him Seth.