How long can Hydra live?

I'm curious, how long can Hydra survive? Is there a definitive lifespan for this particular entity? Have there been any studies or research conducted to determine its longevity? Or is it perhaps dependent on various factors such as its environment, the frequency of its use, or the overall health of the system it operates within? Understanding the potential lifespan of Hydra would be invaluable in assessing its long-term viability and planning for potential contingencies.