prime number Flashcards

1
Q

Is 2 a prime number?

A

The number 2 is a prime number.
Two has 2 natural number divisors - 1 and 2:
2 / 1 = 2
2 / 2 = 1

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2
Q

Is 1 a prime number

A

The number 1 is not a prime number by definition.

One is has one divisor - itself

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3
Q

List of prime numbers up to 100

A

2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79,83,89,97

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4
Q

What is prime number

A

Prime number is a positive natural number that has only two positive natural number divisors - one and itself.

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5
Q

what is the meaning of composite number

A

. A composite number is a positive nutural number that has at least one positive divisor other than one or itself.

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6
Q

what is the number 1 definition

A

The number 1 is not a prime number by definition - it has only one divisor.
.

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7
Q

is number 0 a prime number

A

The number 0 is not a prime number - it is not a positive number and has infinite number of divisors.

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8
Q

can you device number 15

A
The number 15 has divisors of 1,3,5,15 because:
15/1=15
15/3=5
15/5=3
15/15=1
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