Question 130
Find all prime $p$ and natural $m$, that satisfy the equation:
$$
2p^2 + p + 9 = m^2.
$$
$$
2p^2 + p + 9 = m^2.
$$
MathNet 2009-part-04 — 175 problems (EN–VI) Question 130
Math Olympiad Vault · MathNet 2009-part-04 — 175 problems (EN–VI)