The Number

6661

Six Thousand Six Hundred and Sixty-One

In Base 18 Octodecimal Is

12a118

The numbers with a 18 subscript use Base 18 Octodecimal notation.

For more familiar numbers: See Six Thousand Six Hundred and Sixty-One in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

6658
129g18
Six Thousand Six Hundred and Fifty-Eight in Base 18 Octodecimal
6659
129h18
Six Thousand Six Hundred and Fifty-Nine in Base 18 Octodecimal
6660
12a018
Six Thousand Six Hundred and Sixty in Base 18 Octodecimal
6662
12a218
Six Thousand Six Hundred and Sixty-Two in Base 18 Octodecimal
6663
12a318
Six Thousand Six Hundred and Sixty-Three in Base 18 Octodecimal
6664
12a418
Six Thousand Six Hundred and Sixty-Four in Base 18 Octodecimal

Scientific Notation

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

6.661e3

Reciprocal

A number multiplied with its reciprocal is one.

0.000fdc325ff35c5618

The reciprocal of 6661 in Base 18 Octodecimal.

Palindrome?

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

The number 12a118 is not a palindrome.

A Prime Number

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

Six thousand six hundred and sixty-one is the 859th prime number.   See primes in Base 18 Octodecimal

Not A Composite

Composites have more than just these two factors.

Six Thousand Six Hundred and Sixty-One is not a composite number because it has exactly two factors: One and Six Thousand Six Hundred and Sixty-One

Prime Factors

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

The number six thousand six hundred and sixty-one has the following 1 prime factor:

6661
12a118
Six Thousand Six Hundred and Sixty-One in Base 18 Octodecimal

Prime Factorization

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

12a1181 = 12a118

Base Conversions

The number six thousand six hundred and sixty-one in 35 different bases