1444441

Properties

Appears in sequences

• Primes that contain digits 1 and 4 only.at n=17A020452
• Palindromic prime concatenated with next palindromic prime is a prime.at n=14A030462
• Palindromic primes using only two distinct digits and only the exterior digit is different.at n=25A056728
• Primes which are a sandwich of numbers using at most one digit between two 1's.at n=11A068685
• Palindromic primes with middle digit 4.at n=14A082440
• Palindromic primes whose digital root equals their middle digits.at n=16A082518
• Palindromic primes using only nonprime digits (0,1,4,6,8,9).at n=29A083185
• Smallest palindromic prime containing exactly n 4's.at n=4A083975
• Smallest palindromic prime containing the n-th palindrome.at n=13A085054
• Expansion of x*(11 + 22*x + 20*x^2)/((1-x)*(1+x)*(1 - 10*x^2)).at n=11A094620
• Expansion of x*(11+13*x+20*x^2) / ( (x-1)*(1+x)*(10*x^2-1) ).at n=11A094621
• Expansion of x*(11+20*x)/((1-x)*(1-10*x^2)).at n=11A094622
• Palindromic good primes.at n=12A096473
• Palindromic primes in which all internal digits are 4.at n=0A108841
• Palindromic primes using only (decimal) square digits 0,1,4,9.at n=13A174884
• Palindromic primes in the sense of A007500 with digits '0', '1' and '4' only.at n=23A199304
• a(n) = n 4's sandwiched between two 1's.at n=5A205084
• Primes of the form XYYYYYX, where Y is a single digit.at n=1A214291
• Palindromic prime numbers == 4 (mod 9).at n=27A229499
• Happy palindromic primes.at n=20A364479