Lemma
MediumDivisibility
AQuA-RAT train #27772 · Number Theory · Divisibility

The smallest value of n, for which 2n+1 is not a prime…

The smallest value of n, for which 2n+1 is not a prime number, is

This problem repeats another one in the library (at most with different numbers), so it's left out of browsing.

~8 minAnswer checked instantly

AQuA-RAT — Algebra Question Answering with Rationales (Ling et al., DeepMind, 2017) · train #27772

Stuck? A gentle nudge

No hints for this one.

Something off?
Workspace
Your answer

Checked against the answer in AQuA-RAT.