My dh's great aunt is hopefully going to make it to 100 in July. She lives in a warden controlled old people's complex and doesn't have daily carers but does have quite a lot of help from family in terms of shopping and cooking and obviously couldn't go out on her own any more. However she doesn't have dementia and isn't in full time nursing care.
My step mother's mother is 96.
My own grandmother died at just short of her 95th birthday (in an old people's home but not nursing home for the last 2 years of her life).
I think there was a male relative on my father's side who lived to 101 and died in the 1980s but I don't really know the details.