The Number

2191

Two Thousand One Hundred and Ninety-One

In Base 11 Undecimal Is

171211

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

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

Nearby Numbers

Positive, nonzero integers within three units

2188
170a11
Two Thousand One Hundred and Eighty-Eight in Base 11 Undecimal
2189
171011
Two Thousand One Hundred and Eighty-Nine in Base 11 Undecimal
2190
171111
Two Thousand One Hundred and Ninety in Base 11 Undecimal
2192
171311
Two Thousand One Hundred and Ninety-Two in Base 11 Undecimal
2193
171411
Two Thousand One Hundred and Ninety-Three in Base 11 Undecimal
2194
171511
Two Thousand One Hundred and Ninety-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.

2.191e3

Reciprocal

A number multiplied with its reciprocal is one.

0.00067562103597401a911

The reciprocal of 2191 in Base 11 Undecimal.

Palindrome?

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

The number 171211 is not a palindrome.

Not A Prime Number

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

Two thousand one hundred and ninety-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.

Two thousand one hundred and ninety-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 thousand one hundred and ninety-one has the following 2 prime factors:

7
711
Seven in Base 11 Undecimal
313
26511
Three 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

7111 · 265111 = 171211

Base Conversions

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