 | This article relies largely or entirely on a single source .(January 2025) |
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| Cardinal | two hundred forty-three | |||
| Ordinal | 243rd (two hundred forty-third) | |||
| Factorization | 35 | |||
| Greek numeral | ΣΜΓ´ | |||
| Roman numeral | CCXLIII, ccxliii | |||
| Binary | 111100112 | |||
| Ternary | 1000003 | |||
| Senary | 10436 | |||
| Octal | 3638 | |||
| Duodecimal | 18312 | |||
| Hexadecimal | F316 | |||
243 (two hundred [and] forty-three) is the natural number following 242 and preceding 244.
Additionally, 243 is:
- the only 3-digit number that is a fifth power (35).
- a perfect totient number. [1]
- the sum of five consecutive prime numbers (41 + 43 + 47 + 53 + 59).
- an 82-gonal number.
