1572751

Properties

Appears in sequences

• Palindromic primes with middle digit 2.at n=25A082438
• 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=28A083842
• Smallest palindromic prime beginning with the n-th prime, or 0 if no such prime exists.at n=36A088249
• Start with a single hexagon; at n-th generation add a hexagon at each expandable vertex; a(n) is the sum of all label values at n-th generation. (See comment for construction rules.)at n=17A247620
• Palindromic primes of the form p//q//reverse(p), where p is a prime (not necessarily palindromic) and q, of course, is a palindromic prime.at n=30A343714
• Palindromic primes of the form p//q//reverse(p), where p, q, and reverse(p) are primes.at n=25A343715
• a(0) = 2; for n > 0, a(n) is the smallest palindromic prime containing exactly n more digits on each end than a(n-1), with a(n-1) as the central substring.at n=2A375956
• Prime numbersat n=119262