The Number

12745

Twelve Thousand Seven Hundred and Forty-Five

In Base 21 Unovigesimal Is

17ij21

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

For more familiar numbers: See Twelve Thousand Seven Hundred and Forty-Five in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

12742
17ig21
Twelve Thousand Seven Hundred and Forty-Two in Base 21 Unovigesimal
12743
17ih21
Twelve Thousand Seven Hundred and Forty-Three in Base 21 Unovigesimal
12744
17ii21
Twelve Thousand Seven Hundred and Forty-Four in Base 21 Unovigesimal
12746
17ik21
Twelve Thousand Seven Hundred and Forty-Six in Base 21 Unovigesimal
12747
17j021
Twelve Thousand Seven Hundred and Forty-Seven in Base 21 Unovigesimal
12748
17j121
Twelve Thousand Seven Hundred and Forty-Eight in Base 21 Unovigesimal

Scientific Notation

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

1.2745e4

Reciprocal

A number multiplied with its reciprocal is one.

0.000f5985bh2f2e621

The reciprocal of 12745 in Base 21 Unovigesimal.

Palindrome?

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

The number 17ij21 is not a palindrome.

Not A Prime Number

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

Twelve thousand seven hundred and forty-five 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.

Twelve thousand seven hundred and forty-five 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 twelve thousand seven hundred and forty-five has the following 2 prime factors:

5
521
Five in Base 21 Unovigesimal
2549
5g821
Two Thousand Five Hundred and Forty-Nine in Base 21 Unovigesimal

Prime Factorization

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

5211 · 5g8211 = 17ij21

Base Conversions

The number twelve thousand seven hundred and forty-five in 35 different bases