The Number

18

Eightteen

In Base 25 Pentavigesimal Is

i25

The numbers with a 25 subscript use Base 25 Pentavigesimal notation.

For more familiar numbers: See Eightteen in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

15
f25
Fifteen in Base 25 Pentavigesimal
16
g25
Sixteen in Base 25 Pentavigesimal
17
h25
Seventeen in Base 25 Pentavigesimal
19
j25
Nineteen in Base 25 Pentavigesimal
20
k25
Twenty in Base 25 Pentavigesimal
21
l25
Twenty-One in Base 25 Pentavigesimal

Scientific Notation

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

1.8e1

Reciprocal

A number multiplied with its reciprocal is one.

0.19i19i19i19i25

The reciprocal of 18 in Base 25 Pentavigesimal.

Palindrome?

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

The number i25 is a palindrome.

Not A Prime Number

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

Eightteen is a composite number with 6 total factors (including 1 and itself).   See primes in Base 25 Pentavigesimal

A Composite

Composites have more than just these two factors.

Eightteen is a composite number with 6 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 eightteen has the following 2 prime factors:

2
225
Two in Base 25 Pentavigesimal
3
325
Three in Base 25 Pentavigesimal

Prime Factorization

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

2251 · 3252 = i25

Base Conversions

The number eightteen in 35 different bases