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Cardinal | one hundred fifty-four | |||
Ordinal | 154th (one hundred fifty-fourth) | |||
Factorization | 2 × 7 × 11 | |||
Divisors | 1, 2, 7, 11, 14, 22, 77, 154 | |||
Greek numeral | ΡΝΔ´ | |||
Roman numeral | CLIV | |||
Binary | 100110102 | |||
Ternary | 122013 | |||
Senary | 4146 | |||
Octal | 2328 | |||
Duodecimal | 10A12 | |||
Hexadecimal | 9A16 |
154 (one hundred [and] fifty-four) is the natural number following 153 and preceding 155.
154 is a nonagonal number. [1] Its factorization makes 154 a sphenic number.
There is no integer with exactly 154 coprimes below it, making 154 a noncototient, nor is there, in base 10, any integer that added up to its own digits yields 154, making 154 a self number
154 is the sum of the first six factorials, if one starts with and assumes that .
With just 17 cuts, a pancake can be cut up into 154 pieces (Lazy caterer's sequence). [2]
The distinct prime factors of 154 add up to 20, and so do the ones of 153, hence the two form a Ruth-Aaron pair. 154! + 1 is a factorial prime.
154 is also:
400 is the natural number following 399 and preceding 401.
127 is the natural number following 126 and preceding 128. It is also a prime number.
4000 is the natural number following 3999 and preceding 4001. It is a decagonal number.
5000 is the natural number following 4999 and preceding 5001. Five thousand is the largest isogrammic numeral in the English language.
145 is the natural number following 144 and preceding 146.
129 is the natural number following 128 and preceding 130.
131 is the natural number following 130 and preceding 132.
133 is the natural number following 132 and preceding 134.
136 is the natural number following 135 and preceding 137.
173 is the natural number following 172 and preceding 174.
141 is the natural number following 140 and preceding 142.
139 is the natural number following 138 and preceding 140.
156 is the natural number, following 155 and preceding 157.
158 is the natural number following 157 and preceding 159.
159 is a natural number following 158 and preceding 160.
165 is the natural number following 164 and preceding 166.
161 is the natural number following 160 and preceding 162.
166 is the natural number following 165 and preceding 167.
176 is the natural number following 175 and preceding 177.
182 is the natural number following 181 and preceding 183.