32189

Properties

Appears in sequences

• a(n) = 10000*log(n) rounded to nearest integer.at n=24A004244
• a(n) = ceiling(10000*log(n)).at n=24A004245
• Fifth term of strong prime sextets: p(m-3)-p(m-4) > p(m-2)-p(m-3) > p(m-1)-p(m-2) > p(m)-p(m-1) > p(m+1)-p(m).at n=8A054817
• a(n) is the n-th prime whose decimal expansion begins with the decimal expansion of n.at n=31A077345
• Leading diagonal of triangle A093922.at n=42A093923
• Numbers k such that 7*10^k + 3*R_k - 2 is prime, where R_k = 11...1 is the repunit (A002275) of length k.at n=23A103055
• Expansion of (7 +4*x -5*x^2 -7*x^3) / ((1-x)*(1-x^2-x^3)).at n=30A103485
• Records in A110030.at n=15A110031
• Primes in A152535.at n=26A152563
• Depression-type primes with five digits; from left to right digits decrease to and increase from the central digit.at n=19A157083
• Smallest of three consecutive primes in arithmetic progression with common difference 24 and digit sum prime.at n=32A253140
• Numbers p that are the first of three consecutive primes p,q,r such that p*q*r-(p+q+r) and p*q*r+(p+q+r) are both in A001043.at n=5A346653
• Least prime p such that the decimal expansion of p^2 contains exactly n distinct primes as substrings.at n=17A385709
• Number of nonisomorphic semigroups with n elements satisfying the equation xyz = xz.at n=22A390162
• Prime numbersat n=3453