A045495 Smallest positive integer requiring at least n letters (not including hyphens) to be spelled out in English.

1, 1, 1, 3, 3, 11, 13, 13, 17, 23, 23, 73, 101, 101, 101, 101, 103, 103, 111, 113, 113, 117, 123, 123, 173, 323, 373, 1103, 1103, 1111, 1113, 1113, 1117, 1123, 1123, 1173, 1323, 1373, 3323, 3373, 11373, 13323, 13373, 17373, 23323, 23373, 73373, 101123

Offset: 1

Author

Brian Galebach

Keywords

• nonn
• word

Comments

Assumes British definition of billion trillion. Also assumes 'and' is used in numbers such as 'one hundred and one'.

Crossrefs

Cf. A000916, A001166, A014388, A045494, A045495, A167509.

Extensions

Added "at least" in definition, and a cross-reference M. F. Hasler, Nov 18 2009