Prime Numbers Flashcards
1
Q
How many factors does a prime number have?
A
2: 1 and itself
2
Q
What is the only even prime number
A
2
3
Q
Is 0 prime?
A
No
4
Q
Is 1 prime?
A
No
5
Q
What is the first prime number?
A
2
6
Q
What are the prime numbers less than 20?
A
2, 3, 5, 7, 11, 13, 17, 19
7
Q
Every positive integer greater than 1 can be expressed as…
A
a unique product of prime numbers
8
Q
Is 51 prime?
A
No
9
Q
Is 57 prime?
A
No
10
Q
Is 91 prime?
A
No
