| Name | DOUBLE-STRUCK CAPITAL R DOUBLE-STRUCK R |
| Unicode Version | 1.1 |
| Block（ブロック） | Letterlike Symbols（文字様記号） |
| Plane（面） | Basic Multilingual Plane（基本多言語面） |
| Script | |
| Category | |
| Bidirectional Class | |
| Combining Class | |
| Character is Mirrored | |
| HTML Entity | ℝ ℝ |
| UTF-8 Encoding | ℝ e2849d |
| UTF-16 Encoding | ℝ 211d |
| UTF-32 Encoding | ℝ 0000211d |