The Number

21971

Twenty-One Thousand Nine Hundred and Seventy-One

In Base 2 Binary Is

1010101110100112

The numbers with a 2 subscript use Base 2 Binary notation.

For more familiar numbers: See Twenty-One Thousand Nine Hundred and Seventy-One in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

21968
1010101110100002
Twenty-One Thousand Nine Hundred and Sixty-Eight in Base 2 Binary
21969
1010101110100012
Twenty-One Thousand Nine Hundred and Sixty-Nine in Base 2 Binary
21970
1010101110100102
Twenty-One Thousand Nine Hundred and Seventy in Base 2 Binary
21972
1010101110101002
Twenty-One Thousand Nine Hundred and Seventy-Two in Base 2 Binary
21973
1010101110101012
Twenty-One Thousand Nine Hundred and Seventy-Three in Base 2 Binary
21974
1010101110101102
Twenty-One Thousand Nine Hundred and Seventy-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.

2.1971e4

Reciprocal

A number multiplied with its reciprocal is one.

0.000000000000001011111011100110110111100000001100001101100000010012

The reciprocal of 21971 in Base 2 Binary.

Palindrome?

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

The number 1010101110100112 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 nine hundred and seventy-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 nine hundred and seventy-one is a composite number with 4 total factors (including 1 and itself).

Prime Factors

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

The number twenty-one thousand nine hundred and seventy-one has the following 2 prime factors:

127
11111112
One Hundred and Twenty-Seven in Base 2 Binary
173
101011012
One Hundred and Seventy-Three in Base 2 Binary

Prime Factorization

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

111111121 · 1010110121 = 1010101110100112

Base Conversions

The number twenty-one thousand nine hundred and seventy-one in 35 different bases