 Calculations using a quantum tunneling model predict the existence of several isotopes of tennessine up to 303Ts.The most stable of these is expected to be 296Ts with an alpha-decay half-life of 40 milliseconds.A liquid drop model study on the element's isotopes shows similar results; it suggests a general trend of increasing stability for isotopes heavier than 301Ts, with partial half-lives exceeding the age of the universe for the heaviest isotopes like 335Ts when beta decay is not considered.