90379

Properties

Appears in sequences

• a(n) cannot be prefixed or followed by any digit to form a prime ('empty' prefixes allowed).at n=29A032736
• Primes starting and ending with 9.at n=37A062335
• Smaller of two consecutive primes which are anagrams of each other.at n=33A069567
• a(n) = smallest non-palindromic k such that the Reverse and Add! trajectory of k is palindrome-free and joins the trajectory of A070788(n).at n=15A089494
• Smaller prime p in Ormiston pairs (p, q) with q - p = 18.at n=31A163678
• Duplicate of A163678.at n=31A175517
• Canyon primes (A134971) whose first and last digits are 9.at n=30A179673
• Number of compositions (ordered partitions) of n into square pyramidal numbers (A000330).at n=42A322340
• Prime numbersat n=8751