All about flooble | fun stuff | Get a free chatterbox | Free JavaScript | Avatars
 perplexus dot info

 Does it continue? 4: Euclid's next prime (Posted on 2017-09-21)
Before trying the problem "note your opinion as to whether the observed pattern is known to continue, known not to continue, or not known at all."

Let P(n)= The product of the first n primes.

P(n)+1 is like Euclid's method to show there are infinitely many primes, and may or not be prime itself. Now look at the difference between P(n) and the next prime after P(n)+1.

n=1, 5-(2)=3
n=2, 11-(2x3)=5
n=3, 37-(2x3x5)=7
n=4, 223-(2x3x5x7)=13
n=5, 2333-(2x3x5x7x11)=23
n=6, 30047-(2x3x5x7x11x13)=17
n=7, 510529-(2x3x5x7x11x13x17)=19
n=8, 9699713-(2x3x5x7x11x13x17x19)=23

Are these differences always prime?

 No Solution Yet Submitted by Jer No Rating

Comments: ( You must be logged in to post comments.)
 Subject Author Date Prediction and result broll 2017-09-21 22:47:03 Your thoughts? Jer 2017-09-21 21:05:31 Initial thought and computer exploration Charlie 2017-09-21 13:05:22

 Search: Search body:
Forums (0)