Primes with digit sum = 56.

Terms

a(0) =2999999a(1) =3998999a(2) =4799999a(3) =4979999a(4) =4998989a(5) =4999889a(6) =5789999a(7) =5888999a(8) =5898989a(9) =5899979a(10) =5899997a(11) =5979899a(12) =5988989a(13) =5989889a(14) =5998799a(15) =5999699a(16) =6689999a(17) =6779999a(18) =6799799a(19) =6799889a(20) =6799979a(21) =6888989a(22) =6889997a(23) =6896999