One of our Indian readers from Arindam Inc. sent me a screen shot via email of Google now using the Lakh numbering format for the estimated search results count.

A lakh or lac is a unit in the South Asian numbering system equal to one hundred thousand (100,000; Scientific notation: 105). In the Indian numbering system, it is written as 1,00,000. It is widely used both in official and other contexts in Bangladesh, India, Myanmar, Nepal, Pakistan, and Sri Lanka. It is often used in Indian, Pakistani, and Sri Lankan English.

Here is a screen shot of how it looks like in Google India for [weather kolkata]:

Same result in Google.com, with the standard number format:

I believe this is a pretty new change that is now available on Google India and other localized properties.

Forum discussion at Google+.