23251

Properties

Appears in sequences

• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 86 ones.at n=31A031854
• Least prime in A031936 (lesser of 18-twins) whose distance to the next 18-twin is 2*n.at n=35A052358
• Primes of the form k^2 - 7*k + 7.at n=31A089376
• Primes that are a concatenation of 2, 3 and a prime.at n=12A101218
• a(n) = smallest prime p such that p is the home prime (cf. A037274) of exactly n natural numbers.at n=6A118756
• Centered triangular numbers that are prime.at n=28A125602
• Home primes whose homeliness is greater than 4.at n=12A133963
• Home primes whose homeliness is greater than 5.at n=3A133965
• Home primes whose homeliness is greater than 6.at n=2A133967
• Home primes whose homeliness is 7.at n=0A133968
• Prime numbers, isolated from neighboring primes by >16.at n=27A137875
• Primes congruent to 34 mod 71.at n=36A154624
• Primes of the form 250n + 1.at n=26A179231
• a(n) is the smallest prime such that it and the previous two primes are all of the form x^2 + n * y^2.at n=41A212603
• Values of x in A216363.at n=26A216382
• Primes with nonzero digits such that sum of cubes of digits equal to square of sums.at n=8A225567
• Expansion of g.f. (1-2*x+51*x^2)/(1-x)^3.at n=31A257352
• Prime numbers that are the sum of one or more consecutive triangular numbers.at n=41A269414
• Expansion of g.f. -x*(2*x^3+2*x^2+x-2)/(x^4-2*x+1).at n=18A317200
• Discriminants of imaginary quadratic fields with class number 29 (negated).at n=34A351667