​Solve this riddle for your next clue

​I am the age when you're almost grown,
But not quite ready to stand alone.
A prime number, odd, and so unique,
What number am I that you seek?

​​In the Wizarding World, numbers hold might,
From platform to spells, they guide the light.
A page number crucial to the Dark Lord’s fall,
In the book of secrets, it reveals it all.
Find the number where events align,

A prime enigma, both odd and lean,
In Fibonacci’s sequence, I can be seen.
Apollo’s quests numbered the same,
A number of trials, a number of fame.
From superstition to lunar lore,
What number am I at the core?