CONJUGATED DIENE POLYMER, METHOD FOR PRODUCING CONJUGATED DIENE POLYMER, CONJUGATED DIENE POLYMER COMPOSITION, AND RUBBER COMPOSITION

The conjugated diene-based polymer has a Mooney viscosity measured at 100°C of 40 or more and 170 or less, has Mooney stress relaxation measured at 100°C of 0.35 or less, and has a branch number (Bn) measured by viscosity detector-equipped GPC-light scattering measurement of 8 or more.