How many teachers, known as tirthankaras, are said to have preceded Mahavira according to Jaina tradition?

23

Before the birth of Vardhamana, later known as Mahavira, in the sixth century BCE, the foundational philosophy of the Jains was already in existence within northern India. In accordance with Jaina tradition, Mahavira was preceded by 23 esteemed teachers, or tirthankaras, who are figuratively regarded as guides helping individuals navigate the river of existence.