15514861

Properties

Appears in sequences

• Smallest prime beginning a complete Cunningham chain (of the second kind) of length n.at n=7A005603
• First member of a prime n-tuplet in a 2p-1 progression.at n=7A057330
• Smallest prime p such that the infinite sequence {p, p'=2p-1, p''=2p'-1, ...} begins with a string of exactly n primes.at n=7A064812
• Duplicate of A005603.at n=7A109828
• Smallest prime beginning (through <*2+1> or/and <*2-1>) a complete Cunningham chain (of the first or the second kind) of length n.at n=7A110089
• A057330 with duplicates omitted.at n=3A179866
• a(n) is the first prime p such that the longest sequence of primes p = p_1, p_2, ... with |p_{k+1} - 2*p_k| = 1 has length n.at n=7A364091
• Prime numbersat n=1001790