31039

Properties

Appears in sequences

• Primes p such that p, p+12, p+24 are consecutive primes.at n=30A052188
• Prime lucky numbers k (from A031157) such that nextprime(k)=nextlucky(k).at n=36A057698
• Primes p that divide Fibonacci[(p-1)/7].at n=35A125253
• Depression-type primes with five digits; from left to right digits decrease to and increase from the central digit.at n=9A157083
• Number of (w,x,y) with all terms in {0,...,n} and w != max(|w-x|,|x-y|,|y-w|).at n=31A213498
• Primes of the form p^4+q^4+r^4-4 with p<=q<=r all prime.at n=7A256380
• Lexicographically largest strictly increasing sequence of primes for which the continued square root map produces Feigenbaum's constant delta = 4.6692016... (A006890).at n=28A257809
• P(n,k) is an array read by rows, with n > 0 and k=1..5, where row n gives the chain of 5 consecutive primes {p(i), p(i+1), p(i+2), p(i+3), p(i+4)} having the symmetrical property p(i) + p(i+4) = p(i+1) + p(i+3) = 2*p(i+2) for some index i.at n=21A267028
• Iterative procedure in A316941 applied to the odd composite numbers (A071904) (a(n) = -1 if no prime is ever reached).at n=40A276662
• Primes p such that A001175(p) = (p-1)/7.at n=20A308792
• Primes p such that A001177(p) = (p-1)/7.at n=13A308800
• Index position of {3}^n within the list of partitions of 3n in canonical ordering.at n=13A332720
• Prime numbersat n=3344