Comment by thomasahle

Most players actually peak in strength around age 35 [1].

But Carlsen has been number one for more time than any player for him, safe Kasparov [2]:

- Kasparov 255 months at number 1

- Carlsen 188

- Karpov 102

- Fischer 54

Bonus nuance: Carlsen has the longest unbroken run of 174 consecutive rating lists

[1]: https://en.chessbase.com/post/the-age-related-decline-in-che...

[2]: https://en.wikipedia.org/wiki/List_of_FIDE_chess_world_numbe...