In most primates females outlive males. I think there are a few exceptions where it’s close to equal, but I don’t have a source right in front of or anything and I’m pretty sure non of those exceptions are great apes. This has been observed in captivity which controls for a significant amount of riskier behaviour, lack of medical care, and other threats such as predators. But also compared to a lot of mammals, the sexual dimorphism of life expectancy in humans is pretty low. I think a more interesting question is why do human males live so long.