a(n) = largest composite number of n decimal digits that becomes prime by decreasing any one of the higher-order digits.
A124113
a(n) = largest composite number of n decimal digits that becomes prime by decreasing any one of the higher-order digits.
Terms
- a(0) =99a(1) =987a(2) =9951a(3) =99939a(4) =996983a(5) =9981153a(6) =99745289a(7) =981196517a(8) =9927756573a(9) =99243774623a(10) =992617385333
External references
- oeis: A124113