115_(number)
115 (number)
Natural number
115 (one hundred [and] fifteen) is the natural number following 114 and preceding 116.
Quick Facts ← 114 115 116 →, Cardinal ...
| ||||
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Cardinal | one hundred fifteen | |||
Ordinal | 115th (one hundred fifteenth) | |||
Factorization | 5 × 23 | |||
Divisors | 1, 5, 23, 115 | |||
Greek numeral | ΡΙΕ´ | |||
Roman numeral | CXV | |||
Binary | 11100112 | |||
Ternary | 110213 | |||
Senary | 3116 | |||
Octal | 1638 | |||
Duodecimal | 9712 | |||
Hexadecimal | 7316 |
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115 has a square sum of divisors:[1]
There are 115 different rooted trees with exactly eight nodes,[2] 115 inequivalent ways of placing six rooks on a 6 × 6 chess board in such a way that no two of the rooks attack each other,[3] and 115 solutions to the stamp folding problem for a strip of seven stamps.[4]
115 is also a heptagonal pyramidal number.[5] The 115th Woodall number,
is a prime number.[6] 115 is the sum of the first five heptagonal numbers.