Math Mom Academy on Instagram: "Why 5 is the MOST unique prime number! 5️⃣✨ 5 is the ONLY prime number that ends in 5! Here's the logic: - Prime numbers have exactly 2 factors (1 and themselves) - Any number ending in 5 is divisible by 5 - If it's divisible by 5, it has at least 3 factors (1, 5, and itself) - That means it's NOT prime! ❌ Examples: - 15 ÷ 5 = 3 → NOT prime - 25 ÷ 5 = 5 → NOT prime - 35 ÷ 5 = 7 → NOT prime But 5? Only divisible by 1 and 5! ✅ 5 is the ONLY exception - the only prim