Monday 16 September 2019

Prime


Let \(x\) be an integer of the form $$x=\underbrace{111\cdots 11}_{n\thinspace times}$$ Show that, if \(x\) is prime then \(n\) is prime.
at

No comments:

Post a Comment

Subscribe to: Post Comments (Atom)

Define \(f: \mathbb{R} \rightarrow \mathbb{R}\) by \[f(x)= \begin{cases}(1-\cos x) \sin \left(\frac{1}{x}\right), & x \neq 0 \\ 0, &a...