524221

Properties

Appears in sequences

• Difference between the powers of two and the primes.at n=18A111209
• Let p*q = A006881(n) be the n-th number that is the product of two distinct primes, with p = prime(i), q=prime(j); a(n) = p^j - q^i.at n=39A176885
• Primes with a prime number of binary digits, and with a prime number of 1's and a prime number of 0's.at n=41A272478
• a(n) is the least prime p such that p+prime(n) has exactly n prime factors, counted with multiplicity.at n=18A332860
• a(n) is the smallest prime p > k such that p + k is a power of 2, where k = 2*n - 1, or 0 if no such prime exists.at n=33A343738
• Prime numbersat n=43384