The Number

1986

One Thousand Nine Hundred and Eighty-Six

In Base 21 Unovigesimal Is

4ac21

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

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

Nearby Numbers

Positive, nonzero integers within three units

1983
4a921
One Thousand Nine Hundred and Eighty-Three in Base 21 Unovigesimal
1984
4aa21
One Thousand Nine Hundred and Eighty-Four in Base 21 Unovigesimal
1985
4ab21
One Thousand Nine Hundred and Eighty-Five in Base 21 Unovigesimal
1987
4ad21
One Thousand Nine Hundred and Eighty-Seven in Base 21 Unovigesimal
1988
4ae21
One Thousand Nine Hundred and Eighty-Eight in Base 21 Unovigesimal
1989
4af21
One Thousand Nine Hundred and Eighty-Nine in Base 21 Unovigesimal

Scientific Notation

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

1.986e3

Reciprocal

A number multiplied with its reciprocal is one.

0.004dj97aia7hb8521

The reciprocal of 1986 in Base 21 Unovigesimal.

Palindrome?

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

The number 4ac21 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 eighty-six is a composite number with 8 total factors (including 1 and itself).   See primes in Base 21 Unovigesimal

A Composite

Composites have more than just these two factors.

One thousand nine hundred and eighty-six is a composite number with 8 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 eighty-six has the following 3 prime factors:

2
221
Two in Base 21 Unovigesimal
3
321
Three in Base 21 Unovigesimal
331
fg21
Three Hundred and Thirty-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

2211 · 3211 · fg211 = 4ac21

Base Conversions

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