I've got a few ideas, {Amy} admitted. But I don't know where we're going in the long term. I mean - have you ever thought about what this ultimate treasure could be?Something cool. {Dan}Oh, that's real helpful. I mean, what could make somebody the most powerful Cahill in history? And why thirty-nine clues?Dan shrugged. Thirty-nine is a sweet number. It's thirteen times three. It's also the sum of five prime numbers in a row - 3,5,7,11,13. if you add the first three powers of three, 3 to the first, 3 to the second, and s to the third, you get thirty-nine.Amy stared at him. How did you know that?What do you mean? It's obvious.
Amy expresses uncertainty about their direction in the search for the ultimate treasure, admitting she has some ideas but lacks a long-term vision. She wonders what the treasure could be and what might make someone the most powerful Cahill in history. In this moment, Dan responds sarcastically, questioning the significance of the thirty-nine clues themselves.
Dan explains that thirty-nine is an interesting number, noting its mathematical properties, including that it is thirteen times three, as well as the sum of five consecutive prime numbers. His ability to recall these details impresses Amy, prompting her to question how he knows such information. Dan's confidence in his observations reveals the depth of his analytical thinking.