The Number

1661

One Thousand Six Hundred and Sixty-One

In Base 21 Unovigesimal Is

3g221

The numbers with a 21 subscript use Base 21 Unovigesimal notation.

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

Nearby Numbers

Positive, nonzero integers within three units

1658
3fk21
One Thousand Six Hundred and Fifty-Eight in Base 21 Unovigesimal
1659
3g021
One Thousand Six Hundred and Fifty-Nine in Base 21 Unovigesimal
1660
3g121
One Thousand Six Hundred and Sixty in Base 21 Unovigesimal
1662
3g321
One Thousand Six Hundred and Sixty-Two in Base 21 Unovigesimal
1663
3g421
One Thousand Six Hundred and Sixty-Three in Base 21 Unovigesimal
1664
3g521
One Thousand Six Hundred and Sixty-Four in Base 21 Unovigesimal

Scientific Notation

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

1.661e3

Reciprocal

A number multiplied with its reciprocal is one.

0.005c1h4ia39feg21

The reciprocal of 1661 in Base 21 Unovigesimal.

Palindrome?

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

The number 3g221 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 six hundred and sixty-one is a composite number with 4 total factors (including 1 and itself).   See primes in Base 21 Unovigesimal

A Composite

Composites have more than just these two factors.

One thousand six hundred and sixty-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 six hundred and sixty-one has the following 2 prime factors:

11
b21
Eleven in Base 21 Unovigesimal
151
7421
One Hundred and Fifty-One in Base 21 Unovigesimal

Prime Factorization

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

b211 · 74211 = 3g221

Base Conversions

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