Short answer: the “height” of Lord Rishabhanath (Adinath) in Jain texts is not meant as a simple physical measurement like a human height. In Jain cosmology, references to height, stature, and long life are often symbolic or describe the grand, divine aspects of a Tirthankara’s presence, not a literal ordinary-world height.

Key points to keep in mind:

• What the texts emphasize is the spiritual stature and the universal teaching of the Tirthankara, not a precise physical size.
• Some descriptions of great lifespans and extraordinary ages in Jain scripture are part of the cosmological framework (time cycles and ages of world systems) and are not intended as ordinary human lifespans. Different Digambara and Śvetāmbara traditions sometimes give different details about ages, lifespans, or the exact cosmological numbers.
• Both Digambara and Śvetāmbara traditions accept Rishabhanath as the first Tirthankara, but they may differ in minor details of narration or emphasis. The core message—his spiritual achievement and the Dharma he taught—remains central.

If you’d like, I can share how each tradition describes Adinath’s life and teachings in a simple, faithful way, or point to specific Jain scriptures that discuss Tirthankara figures in their cosmological context.