User blog comment:B1mb0w/Finite: a tour of the finite numbers/@comment-240F:1B:101F:1:E8A0:B3C3:70B1:A854-20170727123133/@comment-30754445-20170728034206

Well, accurately, f22(8) = 22059

66185228434044942951864067458396061614989522267577311297802947435570493724401440549267868490798926773634494383968047143923956857140205406402740536087446083831052036848232439995904404992798007514718326043410570379830870463780085260619444417205199197123751210704970352727833755425876102776028267313405809429548880554782040765277562828362884238325465448520348307574943345990309941642666926723379729598185834735054732500415409883868361423159913770812218772711901772249553153402287759789517121744336755350465901655205184917370974202405586941211065395540765567663193297173367254230313612244182941999500402388195450053080383488  :-)

(Writing numbers in full is a luxury we usually don't have in googology, so I just love those rare instances where it is possible)