The Number
401
Four Hundred and One
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.
4.01e2
Reciprocal
A number multiplied with its reciprocal is one.
0.0024937655860349127
The reciprocal of 401.
Palindrome?
A numerical palindrome has the same value when all of its digits are reversed.
The number 401 is not a palindrome.
A Prime Number
A prime number is a positive integer that is divisible only by itself and one.
Four hundred and one is the 79th prime number. See primes in Base 10 Decimal
Not A Composite
Composites have more than just these two factors.
Four Hundred and One is not a composite number because it has exactly two factors: One and Four Hundred and One
Prime Factors
The number four hundred and one 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
4011
= 401
Base Conversions
The number four hundred and one in 35 different bases