81131

Properties

Appears in sequences

• Primes which when added to their reversals are squares.at n=11A059799
• Primes whose digits do not appear in two previous terms.at n=28A107798
• a(n) = 9*n^3/2 - 21*n^2/2 + 8*n - 4.at n=25A232495
• Primes which yield again a prime when the digits are taken according to the lexicographically first superpermutation of corresponding order and of minimal length.at n=46A332088
• Primes p such that the sum of p and its reversal is the square of a prime.at n=9A367796
• a(n) is the greatest prime q such that A367798(n)^2 is the sum of q and its reversal.at n=2A367900
• Prime numbersat n=7942