Here's how many times people have looked at hints:

Doctor Esker's Notebook


Hint
Small #117181180186717321495115397710851231
Small #216301089180516111463112487410621108
Small #31538978177715861482110589910051072
Medium #11576989178014981555118890610851121
Medium #21338943166014031536110992010621111
Medium #3124485112951355150410278629381011
Large #113457671287128512821018790854905
Large #21313664126011361181974740808849
Large #315657331270140610871026734670780


Son of Doctor Esker's Notebook (The Sequel)


Hint
Small #1304565377349316188385370136292
Small #2300584381358307153378382143276
Small #3266570350367316143368372130264
Medium #1299597349364266132370403132279
Medium #2278576298352264134336403123285
Medium #3285589264348211126318409124256
Large #1245643279387187145305409137293
Large #2226605247388224140268391126278
Large #3211489265296200187293395137330

Return of Doctor Esker's Notebook (The Other Sequel)


Hint
Small #1821251175310981556910376
Small #2781181164811277556610176
Small #376119118471076653699480
Medium #1781151255711269577011475
Medium #2781111305411066636510866
Medium #378110129571075954679469
Large #173115146631195954737684
Large #243103126631335166697191
Large #344102120771105154485184

The hints are sorted by how much help they give you.
The last Large Hint on each page comes very close to just giving you the solution.