227 (two hundred [and] twenty-seven) is the natural number between 226 and 228. It is also a prime number.
| ||||
---|---|---|---|---|
Cardinal | two hundred twenty-seven | |||
Ordinal | 227th (two hundred twenty-seventh) | |||
Factorization | prime | |||
Prime | yes | |||
Greek numeral | ΣΚΖ´ | |||
Roman numeral | CCXXVII | |||
Binary | 111000112 | |||
Ternary | 221023 | |||
Senary | 10156 | |||
Octal | 3438 | |||
Duodecimal | 16B12 | |||
Hexadecimal | E316 |
227 is a twin prime and the start of a prime triplet (with 229 and 233).[1] It is a safe prime, as dividing it by two and rounding down produces the Sophie Germain prime 113.[2] It is also a regular prime,[3] a Pillai prime,[4] a Stern prime,[5] and a Ramanujan prime.[6]
227 and 229 form the first twin prime pair for which neither is a cluster prime.
The 227th harmonic number is the first to exceed six.[7] There are 227 different connected graphs with eight edges,[8] and 227 independent sets in a 3 × 4 grid graph.[9]