[API reference](https://evolu.dev/docs/api-reference) › [@evolu/common](https://evolu.dev/docs/api-reference/common) › [Type](https://evolu.dev/docs/api-reference/common/Type) › Digit1To23

```ts
const Digit1To23: union(
  Digit1To9,
  templateLiteral("1", Digit),
  templateLiteral("2", union("0", "1", "2", "3")),
);
```

Defined in: [packages/common/src/Type.ts:9293](https://github.com/evoluhq/evolu/blob/037c390af081e9944d616ff298a729515c5c5ab7/packages/common/src/Type.ts#L9293)

Decimal string from `"1"` to `"23"`.