Solving for Prime Numbers: Find p and d

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To find numbers p and d such that p, p+d, and p+2d are all prime, it's suggested to choose an even integer for d, with d=4 being a recommended option. Participants note that guessing values for p while keeping d even can lead to solutions. However, d must be greater than 2, which eliminates d=2 as a valid choice. The discussion emphasizes the importance of selecting appropriate values for both p and d to ensure all three numbers are prime. Overall, the approach combines both guessing and strategic selection of d.
Fairy111
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Homework Statement



Find a number p and an integer d>2 such that p, p+d and p+2d are all prime.

Homework Equations





The Attempt at a Solution



Any help with how to go about this would be appreciated, thanks.
 
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You could just guess, of course. Guessing works quite well on this problem.
 
Just pick a value of d and check small values of p. You'll want to pick a value of d that's even. Do you see why? I suggest d=4.
 
yes, i see why d needs to be even. Cheers, il just try guesssing. Just didnt know if there was a more mathematical way that i was supposed to go about it.
 
Dick said:
Just pick a value of d and check small values of p. You'll want to pick a value of d that's even. Do you see why? I suggest d=4.

d= 2 is simpler.
 
HallsofIvy said:
d= 2 is simpler.

But 2 isn't bigger than 2.
 
Question: A clock's minute hand has length 4 and its hour hand has length 3. What is the distance between the tips at the moment when it is increasing most rapidly?(Putnam Exam Question) Answer: Making assumption that both the hands moves at constant angular velocities, the answer is ## \sqrt{7} .## But don't you think this assumption is somewhat doubtful and wrong?

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