The Number

45

Forty-Five

In Base 18 Octodecimal Is

2918

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

For more familiar numbers: See Forty-Five in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

42
2618
Forty-Two in Base 18 Octodecimal
43
2718
Forty-Three in Base 18 Octodecimal
44
2818
Forty-Four in Base 18 Octodecimal
46
2a18
Forty-Six in Base 18 Octodecimal
47
2b18
Forty-Seven in Base 18 Octodecimal
48
2c18
Forty-Eight in Base 18 Octodecimal

Scientific Notation

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

4.5e1

Reciprocal

A number multiplied with its reciprocal is one.

0.073ae73ae73ae718

The reciprocal of 45 in Base 18 Octodecimal.

Palindrome?

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

The number 2918 is not a palindrome.

Not A Prime Number

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

Forty-five is a composite number with 6 total factors (including 1 and itself).   See primes in Base 18 Octodecimal

A Composite

Composites have more than just these two factors.

Forty-five 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 forty-five has the following 2 prime factors:

3
318
Three in Base 18 Octodecimal
5
518
Five in Base 18 Octodecimal

Prime Factorization

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

3182 · 5181 = 2918

Base Conversions

The number forty-five in 35 different bases