The Number

280

Two Hundred and Eighty

In Base 18 Octodecimal Is

fa18

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

For more familiar numbers: See Two Hundred and Eighty in Base 10 Decimal

Nearby Numbers

Positive, nonzero integers within three units

277
f718
Two Hundred and Seventy-Seven in Base 18 Octodecimal
278
f818
Two Hundred and Seventy-Eight in Base 18 Octodecimal
279
f918
Two Hundred and Seventy-Nine in Base 18 Octodecimal
281
fb18
Two Hundred and Eighty-One in Base 18 Octodecimal
282
fc18
Two Hundred and Eighty-Two in Base 18 Octodecimal
283
fd18
Two Hundred and Eighty-Three in Base 18 Octodecimal

Scientific Notation

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

2.80e2

Reciprocal

A number multiplied with its reciprocal is one.

0.012eg8421094b5918

The reciprocal of 280 in Base 18 Octodecimal.

Palindrome?

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

The number fa18 is not a palindrome.

Not A Prime Number

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

Two hundred and eighty is a composite number with 16 total factors (including 1 and itself).   See primes in Base 18 Octodecimal

A Composite

Composites have more than just these two factors.

Two hundred and eighty is a composite number with 16 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 two hundred and eighty has the following 3 prime factors:

2
218
Two in Base 18 Octodecimal
5
518
Five in Base 18 Octodecimal
7
718
Seven in Base 18 Octodecimal

Prime Factorization

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

2183 · 5181 · 7181 = fa18

Base Conversions

The number two hundred and eighty in 35 different bases