The Number

1091

One Thousand and Ninety-One

Nearby Numbers

Positive, nonzero integers within three units

1088
One Thousand and Eighty-Eight
1089
One Thousand and Eighty-Nine
1090
One Thousand and Ninety
1092
One Thousand and Ninety-Two
1093
One Thousand and Ninety-Three
1094
One Thousand and Ninety-Four

Scientific Notation

Scientific notation expresses a quantity as the product of its significand with 10 raised to an integer exponent.

1.091e3

Reciprocal

A number multiplied with its reciprocal is one.

0.0009165902841429881

The reciprocal of 1091.

Palindrome?

A numerical palindrome has the same value when all of its digits are reversed.

The number 1091 is not a palindrome.

A Prime Number

A prime number is a positive integer that is divisible only by itself and one.

One thousand and ninety-one is the 182nd prime number.   See primes in Base 10 Decimal

Not A Composite

Composites have more than just these two factors.

One Thousand and Ninety-One is not a composite number because it has exactly two factors: One and One Thousand and Ninety-One

Prime Factors

The prime factors of a positive integer are the integers that divide it exactly and are also prime.

The number one thousand and ninety-one has the following 1 prime factor:

1091
One Thousand and Ninety-One

Prime Factorization

The prime factorization of a positive integer is the unique list of prime factors together with their multiplicities

10911 = 1091

Base Conversions

The number one thousand and ninety-one in 35 different bases