Nearby Numbers

Positive, nonzero integers within three units

21016

25dg21

Twenty-One Thousand and Sixteen in Base 21 Unovigesimal

21017

25dh21

Twenty-One Thousand and Seventeen in Base 21 Unovigesimal

21018

25di21

Twenty-One Thousand and Eightteen in Base 21 Unovigesimal

21020

25dk21

Twenty-One Thousand and Twenty in Base 21 Unovigesimal

21021

25e021

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

21022

25e121

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

Scientific Notation

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

2.1019e4

Reciprocal

A number multiplied with its reciprocal is one.

0.0009568c9ci0b6jc21

The reciprocal of 21019 in Base 21 Unovigesimal.

Palindrome?

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

The number 25dj21 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 nineteen is the 2365th prime number.   See primes in Base 21 Unovigesimal

Not A Composite

Composites have more than just these two factors.

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

Prime Factors

21019

25dj21

Twenty-One Thousand and Nineteen in Base 21 Unovigesimal

Prime Factorization

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

25dj211 = 25dj21

Base Conversions

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