The Number

21491

Twenty-One Thousand Four Hundred and Ninety-One

In Base 13 Tridecimal Is

9a2213

The numbers with a 13 subscript use Base 13 Tridecimal notation.

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

Nearby Numbers

Positive, nonzero integers within three units

21488
9a1c13
Twenty-One Thousand Four Hundred and Eighty-Eight in Base 13 Tridecimal
21489
9a2013
Twenty-One Thousand Four Hundred and Eighty-Nine in Base 13 Tridecimal
21490
9a2113
Twenty-One Thousand Four Hundred and Ninety in Base 13 Tridecimal
21492
9a2313
Twenty-One Thousand Four Hundred and Ninety-Two in Base 13 Tridecimal
21493
9a2413
Twenty-One Thousand Four Hundred and Ninety-Three in Base 13 Tridecimal
21494
9a2513
Twenty-One Thousand Four Hundred and Ninety-Four in Base 13 Tridecimal

Scientific Notation

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

2.1491e4

Reciprocal

A number multiplied with its reciprocal is one.

0.00014379b11460865413

The reciprocal of 21491 in Base 13 Tridecimal.

Palindrome?

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

The number 9a2213 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 four hundred and ninety-one is the 2410th prime number.   See primes in Base 13 Tridecimal

Not A Composite

Composites have more than just these two factors.

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

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 four hundred and ninety-one has the following 1 prime factor:

21491
9a2213
Twenty-One Thousand Four Hundred and Ninety-One in Base 13 Tridecimal

Prime Factorization

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

9a22131 = 9a2213

Base Conversions

The number twenty-one thousand four hundred and ninety-one in 35 different bases