The Number
4
Four
In Base 7 Septenary Is
47
The numbers with a 7 subscript use Base 7 Septenary notation.
For more familiar numbers: See Four in Base 10 Decimal
Nearby Numbers
Positive, nonzero integers within three units
Scientific Notation
Scientific notation expresses a quantity as the product of its significand with 10 raised to an integer exponent.
4e0
Reciprocal
A number multiplied with its reciprocal is one.
0.15151515151515151527
The reciprocal of 4 in Base 7 Septenary.
Palindrome?
A numerical palindrome has the same value when all of its digits are reversed.
The number 47 is a palindrome.
Not A Prime Number
A prime number is a positive integer that is divisible only by itself and one.
Four is a composite number with 3 total factors (including 1 and itself). See primes in Base 7 Septenary
A Composite
Composites have more than just these two factors.
Four is a composite number with 3 total factors (including 1 and itself).
Prime Factors
The number four has the following 1 prime factor:
Prime Factorization
The prime factorization of a positive integer is the unique list of prime factors together with their multiplicities
272
= 47
Base Conversions
The number four in 35 different bases