23339

Properties

Appears in sequences

• Discriminants of quintic fields with 2 complex conjugates (negated).at n=45A023684
• Right-truncatable primes: every prefix is prime.at n=44A024770
• Last member of a sexy prime quadruple: value of p+18 such that p, p+6, p+12 and p+18 are all prime.at n=37A046124
• Euclid-Mullin sequence (A000945) with initial value a(1)=37 instead of a(1)=2.at n=12A051316
• Fourth term of balanced prime quartets: p(m-2)-p(m-3) = p(m-1)-p(m-2) = p(m)-p(m-1).at n=15A054803
• Primes of the form 2^i*3^j + (i+j) with i, j >= 0.at n=12A069358
• Primes with either no internal digits or all internal digits are 3.at n=54A069678
• Primes p = p_(n+1) such that p_n + p_(n+2) = 2*p_(n+1) + 12.at n=25A095673
• a(1) = 2, a(n) = a(n-1) + 3*(a(n-1)-floor(a(n-1)^(1/3))^3).at n=24A096295
• Main diagonal of table of length of English names of numbers.at n=38A129774
• Primes containing the string 333.at n=13A166581
• Smallest primes p = p(k) with (p(k)+p(k+1)+p(k+2))/15 an integer.at n=18A168556
• Primes of the form (7*10^k+17)/3.at n=3A177419
• Primes with exactly three 3's.at n=24A178552
• Primes p such that p,q,r,s are consecutive primes and 2p+9, 2q+9, 2r+9, 2s+9 are also primes.at n=5A190354
• Number of (w,x,y,z) with all terms in {1,...,n} and 3w = x + y + z + n + 1.at n=44A212251
• Super-prime leaders: right-truncatable primes p with property that appending any single decimal digit to p does not produce a prime.at n=9A239747
• Primes p = prime(n): such that p.n and n.p both are prime, where (.) indicates concatenation.at n=34A243886
• Prime numbers p such that p - primepi(p) is a square, where primepi is the prime counting function.at n=18A245061
• Primes having only {2, 3, 9} as digits.at n=33A260128