How many human years is one Orangutan year?

Their life spans are 50 to 60 years in protected environments. The juvenile orangutans take longer than either gorillas or chimpanzees to mature but less time than a human. Orangutans finish juvenile development as late as 6 or 7 and enter adolescence. While females can reach puberty at 8 years female orangutans can give first birth as late as 14 or 15. The larger males take longer to finish growing and can be 18 before they are mature.