| ||||
|---|---|---|---|---|
| Cardinal | two hundred seventy-eight | |||
| Ordinal | 278th (two hundred seventy-eighth) | |||
| Factorization | 2 × 139 | |||
| Divisors | 1, 2, 139, 278 | |||
| Greek numeral | ΣΟΗ´ | |||
| Roman numeral | CCLXXVIII | |||
| Binary | 1000101102 | |||
| Ternary | 1010223 | |||
| Senary | 11426 | |||
| Octal | 4268 | |||
| Duodecimal | 1B212 | |||
| Hexadecimal | 11616 | |||
278 (two hundred [and] seventy-eight) is the natural number following 277 and preceding 279.
In mathematics
- 278 is an even composite number with 2 prime factors.[1]
- 278 is equal to Φ(30). It is the sum of the totient function.[2]
- 278 is a nontotient number which means that it is an even number that doesn't follow Euler's totient function.[3]
- 278 is the smallest semiprime number that has an anagram that is also semiprime. The other number is 287.[4]
World Records
- On October 29, 2011, April Mathis lifted the heaviest squat weight by a female at 278 kg in Orlando, Florida.[5]
- On November 10, 1993, Tom Rodden received the Guinness World Record for shaving 278 people in one hour.[6]
- On March 25, 2000, in Meadowhall Center, there were 278 human mannequins in the shopping center. They were in a total of 114 stores.[7]
- On December 5, 2006, James Cripps received the Guinness World Record for the highest score in backwards bowling. The score was 278.[8]
Other fields
- The calendar years 278 AD and 278 BC.
- 278 is the number of several highways in Canada, Japan, and the United States.
- 278 Paulina is an asteroid in the asteroid belt. It was discovered by Johann Palisa in Vienna.[9]
References
- ↑ "Composite numbers". mathworld.wolfram.com.
- ↑ Sloane, N. J. A. (ed.). "Sequence A002088". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ↑ "Nontotient numbers". mathworld.wolfram.com.
- ↑ "Semiprime numbers". mathworld.wolfram.com.
- ↑ "278 kg weight lift". www.guinnessworldrecords.com.
- ↑ "278 people shaved in one hour". www.guinnessworldrecords.com.
- ↑ "278 human mannequins in a shopping mall". www.guinnessworldrecords.com.
- ↑ "278 backwards bowling score". www.guinnessworldrecords.com.
- ↑ "278 Paulina information". www.universeguide.com. 27 March 2019.
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