31013

Properties

Appears in sequences

• Palindromic reflectable primes.at n=14A007616
• Base-10 palindromes that starts with 3.at n=32A043038
• Every suffix of palindromic prime a(n) is prime (left-truncatable).at n=10A052024
• Palindromic primes with strictly decreasing digits up to the middle and then strictly increasing.at n=11A062352
• Palindromic primes with digit sum 8.at n=3A070249
• Palindromic primes with at least one zero digit.at n=10A071783
• Primes which can be represented as the sum of a prime and its reverse.at n=19A072385
• Palindromic primes with nonprime middle digit.at n=26A076613
• Palindromic primes = 1 mod 4.at n=23A081220
• Palindromic primes with middle digit 0.at n=2A082435
• a(n) = smallest palindromic prime that begins with A082768(n) and contains more than twice the number of digits in A082768(n), or 0 if no such number exists.at n=15A082770
• 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=17A082807
• Least palindromic prime that strictly encloses the n-th palindromic prime, or 0 if no such prime exists.at n=5A084412
• Palindromic primes with nonincreasing digits up to the middle and then nondecreasing.at n=11A084837
• Smallest palindromic prime built using the palindromes with odd number of digits as central digits.at n=9A087364
• Palindromic hypotenuses in primitive Pythagorean triples.at n=32A087456
• Palindromic primes that yield a prime when sandwiched between two 3's. (Prefixing and suffixing a -three' on both sides yields another pal prime).at n=19A088270
• Palindromic primes that yield a prime when sandwiched between two 7's. (Prefixing and suffixing a 'seven' on both sides yields another pal prime).at n=8A088271
• Primes arising in A090266.at n=25A090267
• Smallest prime obtained by sandwiching prime(n) between identical digits, except that a(5) = 0.at n=25A090268