31699

Properties

Appears in sequences

• a(n) = floor(10000*log_2(n)).at n=8A004268
• a(n) = round(10000*log_2(n)).at n=8A004269
• a(n) = p - A072181(n), where p is the least prime > A072181(n) + 1.at n=44A082432
• a(n) = p - A072181(n), where p is the least prime > A072181(n) + 1.at n=45A082432
• Number of primes less than 10^n having at least one digit 8.at n=5A091709
• Primes that do not divide any term of the Lucas 4-step sequence A073817.at n=27A106300
• Beginning with 7, primes of the form: least multiple of the previous term followed by a 9. Beginning with 7, a(n) is the least prime of the form k*a(n-1)*10 +9.at n=3A113034
• Primes that are arithmetical average of 100 consecutive primes.at n=12A217985
• Primes of the form n^2 + 15.at n=25A243450
• Primes p such that exactly four numbers among all circular permutations of the digits of p are prime.at n=28A344628
• Discriminants of imaginary quadratic fields with class number 37 (negated).at n=26A351675
• a(n) = number of partitions p of n such that the least multiplicity of the parts of p is not a part of p.at n=50A365615
• Primes p_1 where products m of k = 5 consecutive primes p_1..p_k are such that only p_1 < m^(1/k).at n=38A376136
• Prime numbersat n=3409