Depends what you mean by last. Over periods of time that long it's much more likely you'll run into some other object, say fall into a gravity well or somethi

Depends what you mean by last. Over periods of time that long it's much more likely you'll run into some other object, say fall into a gravity well or something like that. Even if you don't, pure erosion from neutral hydrogen and space dust will have disintegrated your capsule long before then.