291 (number)
291 is the natural number following 290 and preceding 292.
In mathematics
- 291 is an odd composite number with two prime factors.
- 291 is a semiprime number meaning that it has 2 prime factors.
- 291 can be written as the sum of the nth prime plus n. It is the 52nd prime plus 52.
- 291 is one of the positions of “c” in the tribonacci word... defined by.
- 291 is the sum of six 4th powers. It is the sum of 44+24+24+14+14+14.