perplexus.info :: Probability : (x!+1)/(x+1) = prime number

(x!+1)/(x+1) = prime number (Posted on 2010-07-30)

For a positive integer x drawn at random between 1 and 20000 inclusively, determine the probability that (x!+1)/(x+1) is a prime number.

No Solution Yet Submitted by K Sengupta

Rating: 2.3333 (3 votes)

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Subject	Author	Date
re: search is over	Steve Herman	2010-08-01 13:03:06
search is over	Daniel	2010-07-31 20:29:48
re: mathematica solutions (so far)	Steve Herman	2010-07-31 09:34:00
re: mathematica solutions (so far)	Justin	2010-07-31 03:57:51
mathematica solutions (so far)	Daniel	2010-07-30 20:06:11
Wilson Quotient Values	Paul	2010-07-30 18:55:34
re(2): computer can't go that high	Charlie	2010-07-30 18:17:40
re: computer can't go that high	Justin	2010-07-30 17:55:26
computer can't go that high	Charlie	2010-07-30 12:44:52

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