Q:

# What number between 30 and 40 has only one and itself as factors?

A:

The numbers between 30 and 40 whose only factors are one and themselves, also called prime numbers, are 31 and 37. Prime numbers are useful in generating numerical passwords or codes that are difficult to crack.

## Keep Learning

Prime numbers are defined as numbers that have only one and themselves as factors. The vast majority of whole numbers are either prime or composite. Composite numbers are those that have more than two factors, or numbers by which they are divisible. The only exception to this rule is the number one, which is neither prime nor composite. The primary practical application of prime numbers is cryptography algorithms, hash tables and random number generators.

Sources:

## Related Questions

• A: Prime numbers that, when multiplied, equal another number are said to be the “prime factors” of that number. For example, 2 and 7 are the prime factors of ... Full Answer >
Filed Under:
• A: Only numbers that are perfect squares have an odd number of positive factors. All other types of numbers have an even number. However, if negative factors ... Full Answer >
Filed Under:
• A: Eight numbers are factors of 40, including 1, 2 and 4. Other factors of 40 are 5, 8, 10, 20 and 40.... Full Answer >
Filed Under:
• A: The prime factorization of 35 is 5 and 7. Prime factors are numbers that are only divisible by themselves and one. While every number is divisible by one, ... Full Answer >
Filed Under:
PEOPLE SEARCH FOR