88241

Properties

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 23.at n=23A031611
• Primes such that the sum of their digits and the sum of the reciprocals of their digits is also prime.at n=29A064779
• Primes whose sum of reciprocal of digits is a prime.at n=31A266815
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 803", based on the 5-celled von Neumann neighborhood.at n=40A273578
• Prime numbersat n=8559