Nearby Numbers

Positive, nonzero integers within three units

21020

510348

Twenty-One Thousand and Twenty in Base 8 Octal

21021

510358

Twenty-One Thousand and Twenty-One in Base 8 Octal

21022

510368

Twenty-One Thousand and Twenty-Two in Base 8 Octal

21024

510408

Twenty-One Thousand and Twenty-Four in Base 8 Octal

21025

510418

Twenty-One Thousand and Twenty-Five in Base 8 Octal

21026

510428

Twenty-One Thousand and Twenty-Six in Base 8 Octal

Scientific Notation

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

2.1023e4

Reciprocal

A number multiplied with its reciprocal is one.

0.00001436024774472602328

The reciprocal of 21023 in Base 8 Octal.

Palindrome?

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

The number 510378 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 twenty-three is the 2366th prime number.   See primes in Base 8 Octal

Not A Composite

Composites have more than just these two factors.

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

Prime Factors

21023

510378

Twenty-One Thousand and Twenty-Three in Base 8 Octal

Prime Factorization

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

5103781 = 510378

Base Conversions

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