Superconducting magnet (solenoid) please help?

A certain superconducting magnet in the form of a solenoid of length 1.10 m can generate a magnetic field of 13.0 T in its core when its coils carry a current of 145 A. The windings, made of a niobium-titanium alloy, must be cooled to 4.2 K. Find the number of turns in the solenoid.