Greatest cluster prime less than 10^n.

A121044

Greatest cluster prime less than 10^n.

Terms

    a(0) =7a(1) =89a(2) =983a(3) =9931a(4) =99991a(5) =999331a(6) =9997879a(7) =99999551a(8) =999998693a(9) =9999995363a(10) =99999976319a(11) =999999998533

External references