115 (number)
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115 is the natural number following 114 and preceding 116.
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| Cardinal | one hundred [and] fifteen | ||
| Ordinal | 115th | ||
| Factorization | <math>5 \cdot 23 <math> | ||
| Roman numeral | CXV | ||
| Binary | 1110011 | ||
| Hexadecimal | 73 | ||
115 is a heptagonal pyramidal number and a lucky number.
One hundred fifteen is also:
- The atomic number of an element temporarily called ununpentium.
- The year AD 115 or 115 BC.