Английская Википедия:305 (number)
Материал из Онлайн справочника
305 is the natural number following 304 and preceding 306.
In mathematics
- 305 is an odd composite number with two prime factors.[1]
- 305 is the convolution of the first 7 primes with themselves.[2]
- 305 is the fifth hexagonal prism number which is defined by (n+1)(3n2+3n+1).[3]
- 305 is the hypotenuse of two Pythagorean triples. 3052=2072+2242=1362+2732.[4][5]
Other fields
- The calendar years 305 AD and 305 BC.
- 305 is the number for several highways across the countries of Canada, China, India, Japan, the Philippines, and the United States.
References
