Nearby Numbers

Positive, nonzero integers within three units

37

458

Thirty-Seven in Base 8 Octal

38

468

Thirty-Eight in Base 8 Octal

39

478

Thirty-Nine in Base 8 Octal

41

518

Forty-One in Base 8 Octal

42

528

Forty-Two in Base 8 Octal

43

538

Forty-Three in Base 8 Octal

Scientific Notation

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

4e1

Reciprocal

A number multiplied with its reciprocal is one.

0.01463146314631463158

The reciprocal of 40 in Base 8 Octal.

Palindrome?

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

The number 508 is not a palindrome.

Not A Prime Number

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

Forty is a composite number with 8 total factors (including 1 and itself).   See primes in Base 8 Octal

A Composite

Composites have more than just these two factors.

Forty is a composite number with 8 total factors (including 1 and itself).

Prime Factors

2

28

Two in Base 8 Octal

5

58

Five in Base 8 Octal

Prime Factorization

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

283 · 581 = 508

Base Conversions

The number forty in 35 different bases