145021

Properties

Appears in sequences

• First member of a prime 5-tuple in a 2p-1 progression.at n=10A057328
• Primes starting a Cunningham chain of the second kind of length 5.at n=7A110022
• Smallest primes starting a complete four iterations Cunningham chain of the first or second kind.at n=13A110027
• Number of binary strings of length n with no substrings equal to 0000 0101 or 0111.at n=21A164433
• a(n) = Sum_{k=3..n} binomial(k,3) * floor(n/k).at n=42A366971
• Beginning with 13, least prime such that concatenation of first n terms and its digit reversal both are primes.at n=31A382898
• Prime numbersat n=13425