{"type":"rich","version":"1.0","title":"2^4=4^2 is the only integral solution to a^b=b^a","html":"<iframe src=\"https://www.desmos.com/calculator/62sc6ptpgw?embed\" width=\"500px\" height=\"500px\" style=\"border: 1px solid #ccc\" frameborder=0></iframe>","width":500,"height":500}