157 (number)
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157 (one hundred fifty-seven) is a whole number. It comes after 156 and before 158.
| ||||
|---|---|---|---|---|
| Cardinal | one hundred and fifty-seven | |||
| Ordinal | 157th (one hundred and fifty-seventh) | |||
| Factorization | 157 | |||
| Roman numeral | CLVII | |||
| Binary | 100111012 | |||
| Ternary | 122113 | |||
| Quaternary | 21314 | |||
| Quinary | 11125 | |||
| Senary | 4216 | |||
| Octal | 2358 | |||
| Duodecimal | 11112 | |||
| Hexadecimal | 9D16 | |||
| Vigesimal | 7H20 | |||
| Base 36 | 4D36 | |||
Mathematics
- 157 is the 37th prime number.
It is a balanced prime, because it is exactly in the middle of the prime before it (151) and the prime after it (163).
- 157 is also an emirp, which means it is a prime number that becomes a different prime when its digits are reversed. The reverse of 157 is 751, which is also prime.