436831

Properties

Appears in sequences

• Least k such that k*10^n+1, k*10^n+3, k*10^n+7 and k*10^n+9 are all prime.at n=23A064281
• G.f.: A(x) = 1/(1 - x*B(x^3)), where B(x) = Sum_{n>=0} a(n)^3*x^n is the g.f. of A121652.at n=33A121653
• A trisection of A121653; a(n) = A121653(3*n) = A121652(3*n)^(1/3).at n=11A121654
• Least prime p such that p*10^n+1, p*10^n+3, p*10^n+7 and p*10^n+9 are all prime.at n=22A242564
• Prime numbersat n=36709