217271

Properties

Appears in sequences

• Primes p such that q-p is a square, q=nextprime(p) and p and q are subsequent terms in A073609.at n=3A152181
• Primes p such that p^2 + 6, p^2 + 12 and p^2 + 18 are all prime.at n=30A173627
• Primes which have the same (base 10) digital sum A007953 as the next smaller and next larger prime.at n=9A217875
• Triangle read by rows: T(n,k) is the number of ordered pairs of n-permutations with exactly k common double descents, n>=0, 0<=k<=max{0,n-2}.at n=19A334257
• Prime numbersat n=19385