The Last Theorem has 311 pages.
The Parrot's Theorem has 416 pages.
I'd say thousands of pages. The proof of Fermat's last theorem (alone) was over 100 pages.
The Last Olympian has 381 pages.
This was not the last theorem that Fermat wrote. Rather, it was the last one to be proven/disproven.
there are 381 pages in the Last Olympian.
Last Shot has 272 pages.
The Last Dragonslayer has 280 pages.
The Last Templar has 524 pages.
The Last Patriot has 352 pages.
The Last Boleyn has 592 pages.
The Last Sontaran has 128 pages.
The Last Centurion has 448 pages.