Active Region AR2403 has grown greater than 16 times the diameter of Earth. It has produced no less than 60 flares since 20 Aug 15. Watch it if you can - it may surprise you with an X-flare before moving over to the other side....
This is how it looked on the solar disk...
Zooming in, I literally saw granules boiling over, like boiling porridge. It is fantastic!
and here it is in colour: