Nearby Numbers

Positive, nonzero integers within three units

21078

1010010010101102

Twenty-One Thousand and Seventy-Eight in Base 2 Binary

21079

1010010010101112

Twenty-One Thousand and Seventy-Nine in Base 2 Binary

21080

1010010010110002

Twenty-One Thousand and Eighty in Base 2 Binary

21082

1010010010110102

Twenty-One Thousand and Eighty-Two in Base 2 Binary

21083

1010010010110112

Twenty-One Thousand and Eighty-Three in Base 2 Binary

21084

1010010010111002

Twenty-One Thousand and Eighty-Four in Base 2 Binary

Scientific Notation

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

2.1081e4

Reciprocal

A number multiplied with its reciprocal is one.

0.0000000000000011000110111101100001101001011010000010000110110112

The reciprocal of 21081 in Base 2 Binary.

Palindrome?

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

The number 1010010010110012 is not a palindrome.

Not A Prime Number

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

Twenty-one thousand and eighty-one is a composite number with 4 total factors (including 1 and itself).   See primes in Base 2 Binary

A Composite

Composites have more than just these two factors.

Twenty-one thousand and eighty-one is a composite number with 4 total factors (including 1 and itself).

Prime Factors

3

112

Three in Base 2 Binary

7027

11011011100112

Seven Thousand and Twenty-Seven in Base 2 Binary

Prime Factorization

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

1121 · 110110111001121 = 1010010010110012

Base Conversions

The number twenty-one thousand and eighty-one in 35 different bases