53303

Appears in sequences

• Trajectory of 1 under map n->23n+1 if n odd, n->n/2 if n even.at n=12A033968
• Trajectory of 3 under map n->23n+1 if n odd, n->n/2 if n even.at n=8A037109
• Non-palindromic numbers such that the two largest proper divisors are palindromes having at least two digits and no other divisor is a palindrome with at least two digits.at n=34A074889
• a(n) = prime(n) * prime(2*n-1).at n=35A219603