The creation of Livermorium involved the collision of a target 24896Cm with accelerated ions of an isotope which we will denote as Z. After the collision, the product atom immediately releases neutrons and Livermorium is formed.
24896Cm + Z → 296116Lv → 293116Lv + 3 10n
Isotope Z is remarkable in that it is very long-lived despite having an unfavorable neutron-to-proton ratio (its half-life is on the scale of 1019 years). Can you offer an explanation for its unusual stability?