Thread: Covering sets
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Old 2016-02-24, 16:52   #6
mart_r
 
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The Jacobsthal function applied to the product of the first n primes (see OEIS sequence A048670: http://oeis.org/search?q=A048670&sor...lish&go=Search) provides an answer for ranges up to 742. For example, to get a range of 210 covered it takes 23 primes (i.e. up to 83).

The assumption that a covering set consists only of the primes in consecutive order has also proven to be false.
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