32027

Properties

Appears in sequences

• Primes p such that there is no Carmichael number pqr, p<q<r q, r primes.at n=30A051663
• Group the natural numbers such that the n-th group contains n terms and the group sum is the smallest possible prime: (2), (1, 4), (3, 5, 9), (6, 7, 8, 10), (11, 12, 13, 14, 17), (15, 16, 18, 19, 20, 21), ... Sequence gives group sums.at n=39A075345
• Depression-type primes with five digits; from left to right digits decrease to and increase from the central digit.at n=12A157083
• Row sums of the triangle in A162371.at n=39A162373
• Primes of the form floor( (k*(sqrt(3)*k-1))/sqrt(2) ).at n=22A180449
• There appear to be at least n primes in the range (x-2*sqrt(x), x] for all x >= a(n).at n=27A189027
• Smallest of four consecutive primes whose sum is a square.at n=9A206280
• First primes beginning a chain of 4 primes indexed equidistantly (n-th, (n+b)-th, (n+2b)-th, (n+3b)-th primes) whose sum of squares is the square of two times a prime and with b <= n.at n=23A214265
• Primes such that prime plus its digit sum is a perfect square.at n=14A230087
• Primes p such that p + digitsum(p) = q^k for some prime q and k > 1 where digitsum(n) = A007953(n).at n=7A242368
• Intersection of A251964, A252280 and A252281.at n=39A252283
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 339", based on the 5-celled von Neumann neighborhood.at n=35A271291
• Primes p such that p + A007953(p) is the square of a prime.at n=5A307315
• Numbers that cannot be expressed as sum of at most nine repdigits numbers. One may not add two integers with the same repeated digit.at n=2A339673
• Discriminants of imaginary quadratic fields with class number 39 (negated).at n=37A351677
• Primes that do not divide any 3-Carmichael numbers.at n=26A369777
• Prime numbersat n=3435