The Number

821

Eight Hundred and Twenty-One

In Base 30 Trigesimal Is

rb30

The numbers with a 30 subscript use Base 30 Trigesimal notation.

For more familiar numbers: See Eight Hundred and Twenty-One in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

818
r830
Eight Hundred and Eightteen in Base 30 Trigesimal
819
r930
Eight Hundred and Nineteen in Base 30 Trigesimal
820
ra30
Eight Hundred and Twenty in Base 30 Trigesimal
822
rc30
Eight Hundred and Twenty-Two in Base 30 Trigesimal
823
rd30
Eight Hundred and Twenty-Three in Base 30 Trigesimal
824
re30
Eight Hundred and Twenty-Four in Base 30 Trigesimal

Scientific Notation

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

8.21e2

Reciprocal

A number multiplied with its reciprocal is one.

0.012qi1g1784dl30

The reciprocal of 821 in Base 30 Trigesimal.

Palindrome?

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

The number rb30 is not a palindrome.

A Prime Number

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

Eight hundred and twenty-one is the 142nd prime number.   See primes in Base 30 Trigesimal

Not A Composite

Composites have more than just these two factors.

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

Prime Factors

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

The number eight hundred and twenty-one has the following 1 prime factor:

821
rb30
Eight Hundred and Twenty-One in Base 30 Trigesimal

Prime Factorization

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

rb301 = rb30

Base Conversions

The number eight hundred and twenty-one in 35 different bases