87641

Properties

Appears in sequences

• Primes p such that the sum of the primes from 2 through p is a palindrome.at n=4A038584
• Primes of the form 16*m^2 + 25 for m=1,2,3,...at n=27A087857
• Numbers n such that n and the four successive integers produce primes if substituted for x in the polynomial 5x^2+5x+1. See A090562, A090563. Terms show that longer similar chains also exist.at n=36A090100
• Lesser of twin primes p1 such that p1*p2-4 and p1*p2-6 are twin prime numbers.at n=32A174957
• Twin primes with both terms having distinct digits in descending order.at n=11A261511
• a(n) is the number of points in the interior of the n-th figure shown in A255011 (meaning the figure with 4n points on the perimeter).at n=10A334690
• Prime numbersat n=8510