1432349099

Appears in sequences

• a(n) is the least prime of class n-, according to the Erdős-Selfridge classification of primes.at n=14A056637
• Let f(p) = greatest prime divisor of p-1. Sequence gives smallest prime which takes at least n steps to reach 2 when f is iterated.at n=15A082449
• Primes of Erdos-Selfridge class 15-.at n=0A129249
• Smallest k such that 9^^n is not congruent to 9^^(n-1) mod k, where 9^^n denotes the power tower 9^9^...^9 (in which 9 appears n times).at n=14A246497