89519

Properties

Appears in sequences

• Initial term in sequence of four consecutive primes separated by 3 consecutive differences each <=6 (i.e., when d=2,4 or 6) and forming d-pattern=[2, 6,6]; short d-string notation of pattern = [266].at n=28A078849
• The number of permutations of length n sortable by 2 block interchanges.at n=10A228401
• Smallest lesser of twin primes (A001359) with index n, or a(n)=0, if there are no such twin primes.at n=40A242807
• Lesser of twin primes P(k) and P(k+1) such that Sd(P(k)) + Sd(P(k+1)) = Sd(k) + Sd(k+1), where Sd(x) is the sum of digits of x.at n=15A277111
• Prime numbersat n=8668