Nearby Numbers

Positive, nonzero integers within three units

21028

25e721

Twenty-One Thousand and Twenty-Eight in Base 21 Unovigesimal

21029

25e821

Twenty-One Thousand and Twenty-Nine in Base 21 Unovigesimal

21030

25e921

Twenty-One Thousand and Thirty in Base 21 Unovigesimal

21032

25eb21

Twenty-One Thousand and Thirty-Two in Base 21 Unovigesimal

21033

25ec21

Twenty-One Thousand and Thirty-Three in Base 21 Unovigesimal

21034

25ed21

Twenty-One Thousand and Thirty-Four in Base 21 Unovigesimal

Scientific Notation

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

2.1031e4

Reciprocal

A number multiplied with its reciprocal is one.

0.0009541eej4jijc521

The reciprocal of 21031 in Base 21 Unovigesimal.

Palindrome?

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

The number 25ea21 is not a palindrome.

A Prime Number

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

Twenty-one thousand and thirty-one is the 2367th prime number.   See primes in Base 21 Unovigesimal

Not A Composite

Composites have more than just these two factors.

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

Prime Factors

21031

25ea21

Twenty-One Thousand and Thirty-One in Base 21 Unovigesimal

Prime Factorization

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

25ea211 = 25ea21

Base Conversions

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