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

1,1

Comments

Complement of 108632 in the class of semiprimes.

Links

Table of n, a(n) for n=1..51.

Mathematica

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

Crossrefs

Cf. A108632.

Sequence in context: A142863 A318990 A132435 * A200677 A189553 A189482

Adjacent sequences: A108628 A108629 A108630 * A108632 A108633 A108634

Keyword

nonn,base

Author

Zak Seidov, Jun 13 2005

Status

approved