The Number

1921

One Thousand Nine Hundred and Twenty-One

In Base 11 Undecimal Is

149711

The numbers with a 11 subscript use Base 11 Undecimal notation.

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

Nearby Numbers

Positive, nonzero integers within three units

1918
149411
One Thousand Nine Hundred and Eightteen in Base 11 Undecimal
1919
149511
One Thousand Nine Hundred and Nineteen in Base 11 Undecimal
1920
149611
One Thousand Nine Hundred and Twenty in Base 11 Undecimal
1922
149811
One Thousand Nine Hundred and Twenty-Two in Base 11 Undecimal
1923
149911
One Thousand Nine Hundred and Twenty-Three in Base 11 Undecimal
1924
149a11
One Thousand Nine Hundred and Twenty-Four in Base 11 Undecimal

Scientific Notation

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

1.921e3

Reciprocal

A number multiplied with its reciprocal is one.

0.0007692314aa96836511

The reciprocal of 1921 in Base 11 Undecimal.

Palindrome?

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

The number 149711 is not a palindrome.

Not A Prime Number

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

One thousand nine hundred and twenty-one is a composite number with 4 total factors (including 1 and itself).   See primes in Base 11 Undecimal

A Composite

Composites have more than just these two factors.

One thousand nine 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 one thousand nine hundred and twenty-one has the following 2 prime factors:

17
1611
Seventeen in Base 11 Undecimal
113
a311
One Hundred and Thirteen in Base 11 Undecimal

Prime Factorization

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

16111 · a3111 = 149711

Base Conversions

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