[en] The results of the experiment aimed at the synthesis of 108 isotopes in the 2^26Ra(4^8Ca,xn)2^74-xHs nuclear reaction are presented. The experiment was performed using the Dubna gas-filled recoil separator at the U400 cyclotron. We observed six genetically linked decay chains of the parent 2^70Hs nuclei. The properties of this isotope decaying by α-emission with Q_α=9.02±0.08 MeV and T_1/2=7.6 s to the 2^66Sg, which undergoes spontaneous fission (T_1/2=0.28 s), are compared with the properties of the same isotope produced earlier in the reaction 2^48Cm(2^6Mg,3-5n)2^69-271Hs [1]. The values of the measured cross-sections of the reactions with evaporation of 3 to 5 neutrons are discussed. The obtained experimental results allow us to estimate the probability of nuclear fusion for the heavier particle-projectile combinations, e.g., with the 5^0Ti projectiles. One could expect that production cross sections of the reactions of 2^43Am+5^0Ti and 2^49Cf+5^0Ti that lead to the new elements 117 and 120 could exceed 0.2 pb [2].(author)