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Like 21? Prime numbers.

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Q: What is a number called when it has one factor?
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Related questions

What is a number called when they have only one factor?

It is called unity.


What is a factor of a numbe that is also a prime number called?

a prime factor


What is a number called if it has more than one pair of factor?

Composite


What are numbers called with only one factor?

The only number with a single factor is ' 1 '. Every other number has at least two factors: ' 1 ' and itself. A number with only those two factors and no others is called a "prime" number.


What do you called a number with only one factor?

prime * * * * * No, the only number with just one factor is 1. Each prime has TWO factors: 1 and the prime itself.


When is a number called a factor number?

A number is called a factor when it can divide evenly into another number with no remainder. Integers only.


What is it called when a number has more than one factor?

Normal. When a number has more than two factors, it's called composite.


When a factor is multiplied a number only one number what is it called?

Multiplicand times multiplier equals product.


What numbers that have more than one factor called?

A number with more than one factor is normal, since all numbers except 0 and 1 have more than one factor. A number with more than two factors is composite.


The capacity of one number to be exactly divided by anther number is called?

The first number is a multiple of the second. The second number is a factor of the first.


What number is in every factor?

One is a factor of every number.


What is a number that divides evenly into a number?

It is called a 'factor'