As used in this title, unless the context indicates otherwise, "state prison" means:
(1) a state penal or correctional institution whose primary function is to provide for the custody, treatment, training, and rehabilitation of adult criminal offenders;
(2) a state penal or correctional facility portion of a Montana regional correctional facility;
(3) a detention center, a state penal facility, or a correctional facility in another jurisdiction detaining Montana inmates pursuant to 53-30-106;
(4) a private correctional facility or penal facility licensed by the department of corrections or a private correctional facility or penal facility portion of a Montana regional correctional facility licensed by the department of corrections; or
(5) a combination of the facilities listed in this section.