A108631 Semiprimes with nonprime digits (no digits 2,3,5,7 in semiprimes).

4, 6, 9, 10, 14, 46, 49, 69, 86, 91, 94, 106, 111, 118, 119, 141, 146, 161, 166, 169, 194, 411, 446, 466, 469, 481, 489, 611, 614, 649, 669, 681, 689, 694, 698, 699, 818, 841, 849, 866, 869, 886, 889, 898, 899, 901, 914, 949, 961, 989, 998

Offset: 1

Author

Zak Seidov, Jun 13 2005

Keywords

• nonn
• base

Comments

Complement of 108632 in the class of semiprimes.

Crossrefs

Cf. A108632.

Programs

Mathematica

Select[Range[1000],PrimeOmega[#]==2&&ContainsOnly[IntegerDigits[#],{0,1,4,6,8,9}]&] (* Harvey P. Dale, Aug 15 2017 *)