1712171

Properties

Appears in sequences

• Palindromes of form n^2 + 3*n + 1.at n=18A028349
• Palindromic primes with middle digit 2.at n=26A082438
• Palindromic primes whose digital root equals their middle digits.at n=21A082518
• Let f(n) be the n-th palindrome in A089743. Then a(n) is the smallest palindromic prime that begins with f(n).at n=17A088277
• Palindromes in A090272.at n=13A090271
• Take each palindrome ending in 1, 3, 7, or 9 and find smallest prime formed by the digits of that palindrome, followed by a string of digits, followed by the palindrome again.at n=15A090272
• Palindromic primes with digit sum 20.at n=17A109184
• Prime numbersat n=128986