37573

Properties

Appears in sequences

• Numbers k such that (12^k - 1)/11 is prime.at n=11A004064
• Numbers k that divide the (left) concatenation of all numbers <= k written in base 12 (most significant digit on left).at n=13A029481
• Palindromic prime concatenated with next palindromic prime is a prime.at n=4A030462
• Previous palindromic prime concatenated with this palindromic prime is prime.at n=3A030463
• Palindromic prime lengths of factorials: see A035067.at n=23A035068
• Palindromic terms from A019546.at n=13A045336
• Array defined in A064643 read from left to right (cf. A107783).at n=30A064644
• Palindromic primes in which deleting the outside pair of digits yields a prime at every stage until finally a single-digit prime is obtained.at n=15A071119
• Palindromic primes with prime middle digit.at n=33A076611
• Palindromic primes = 1 mod 4.at n=31A081220
• Palindromic primes with middle digit 5.at n=11A082441
• Palindromic prime units W appearing twice in first-order fractal palindromic primes WmW.at n=36A082598
• Palindromic prime units W appearing four times in second-order fractal palindromic primes WxWmWxW, where part WxW is also a palindromic prime.at n=24A082599
• Duplicate of A071119.at n=15A082805
• Palindromic primes p with property that another palindromic prime with as many digits can be obtained by using all the digits of p with a different frequency >=1 (every digit is used at least once).at n=23A082807
• Palindromic primes which are a member of a twin prime pair.at n=22A083840
• Palindromic primes p such that p-2 is also a prime: members of A083840 which are the larger member of a twin prime pair.at n=12A083842
• Least palindromic prime that strictly encloses the n-th palindromic prime, or 0 if no such prime exists.at n=15A084412
• Palindromic primes that yield a prime when sandwiched between two 9's.at n=15A088272
• Primes of the form (prime(prime(k)) + prime(prime(k+1)))/2.at n=26A098042