Anuttara can mean two related ideas in Jainism:

• Anuttara Devas or Anuttara Vimānas (the highest realms of gods): their lifespans are described as extremely long, unimaginable numbers of years in various scriptures.
• An Anuttara Siddha (liberated soul): after attaining moksha, the soul resides in Siddhashila for ever, with no further birth or time-bound lifespan.

In short:

• Devas in Anuttara realms have vast, fixed lifespans described in Jain cosmology.
• A Siddha (Anuttara) has no further lifespan in samsara; they live eternally in Siddhashila.

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