The Number

221

Two Hundred and Twenty-One

In Base 28 Octovigesimal Is

7p28

The numbers with a 28 subscript use Base 28 Octovigesimal notation.

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

Nearby Numbers

Positive, nonzero integers within three units

218
7m28
Two Hundred and Eightteen in Base 28 Octovigesimal
219
7n28
Two Hundred and Nineteen in Base 28 Octovigesimal
220
7o28
Two Hundred and Twenty in Base 28 Octovigesimal
222
7q28
Two Hundred and Twenty-Two in Base 28 Octovigesimal
223
7r28
Two Hundred and Twenty-Three in Base 28 Octovigesimal
224
8028
Two Hundred and Twenty-Four in Base 28 Octovigesimal

Scientific Notation

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

2.21e2

Reciprocal

A number multiplied with its reciprocal is one.

0.03f96r34j76628

The reciprocal of 221 in Base 28 Octovigesimal.

Palindrome?

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

The number 7p28 is not a palindrome.

Not A Prime Number

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

Two hundred and twenty-one is a composite number with 4 total factors (including 1 and itself).   See primes in Base 28 Octovigesimal

A Composite

Composites have more than just these two factors.

Two hundred and twenty-one is a composite number with 4 total factors (including 1 and itself).

Prime Factors

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

The number two hundred and twenty-one has the following 2 prime factors:

13
d28
Thirteen in Base 28 Octovigesimal
17
h28
Seventeen in Base 28 Octovigesimal

Prime Factorization

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

d281 · h281 = 7p28

Base Conversions

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