28447

Properties

Appears in sequences

• Primes that remain prime through 3 iterations of function f(x) = 2x + 3.at n=37A023273
• Primes prime(k) such that prime(k)*k falls between twin primes.at n=20A080174
• Primes whose digit reversal is a pentagonal number (A000326).at n=14A115706
• Alternate binomial partial sums of binomial(2n,n)*binomial(3n,n) (A006480).at n=4A152297
• Primes p that p//13 and p//31 are consecutive primes.at n=38A176601
• G.f. A(x) satisfies A(x) = A(x^3)/A(x^2) + A(x)^2.at n=11A377100
• a(n) is the first prime p such that the concatenations of n consecutive primes, starting with p, in both forward and backward directions, are prime.at n=40A384958
• The number of lattice points in the 2D plane contained between the curve y=x^2/4 and the line y=n^2, inclusive, where n is a positive integer.at n=22A385730
• Prime numbersat n=3096