About islands of stability and limiting mass of the atomic nuclei

The maximum magic number of neutrons for existing nuclei can be 260, protons - 126. The maximum deformation of existing super-heavy nuclei corresponds to the number of protons is about 120, the number of neutrons is about 120, 155 and 222. The islands (or shallows) of stability can be formed not only around the ²⁹⁸Fl, but also around the ³²⁰120 and ³⁴²126. The islands are extended toward larger numbers of neutrons. An increase in the half-life should be observed for the ³⁴⁸126 and ³⁸⁶126. The half-life of ²⁹⁸Fl is ∼10⁷...10⁸ years. This is an understated estimate. The half-life of the longest-lived isotope of the 126th element with a mass number of 342 is ∼10⁶...10⁷ s (or 0.03...0.33 years).