Is this the most expensive painting in the world?

After the recent record braking Impressionist auction (186 million dollar) another insane price was paid. It was rumoured that a Qatar museum paid a staggering 300 million dollars for the Gauguin painting Nafea Faa Ipoipo (When Will You Marry?).

A quick calculation shows that the buyer paid about 250.000 dollars per square inch.

via Paul Gauguin Painting Sells for Record $300 Million to Qatar Museums in Private Sale – artnet News.