No, it is not considered literally lakhs of years old.

In Jain tradition, Lord Neminath Bhagwan is an ancient Tirthankar, and Girnar is a highly sacred tirtha because it is associated with his moksha. But the idol itself in the temple is generally understood to be a later installation, not something physically present for lakhs of years.

So, in simple terms:

• Lord Neminath Bhagwan is ancient and eternal in spiritual significance.
• Girnar tirth is very ancient and holy.
• The idol is not literally lakhs of years old.

If you are asking in the traditional Jain faith sense, people may use very reverent language like “pracheen” or “atyant puratan,” but “lakhs of years old” should not be taken as a factual age of the idol.