Remember your divisibility rules!!!!
PRIME OR COMPOSITE
Prime numbers – only
have 2 factors, 1 and
itself
Examples – 2, 3, 5, 7, 11, 13,
17, 17, 23……
Composite Numbers – have
more than two factors
Examples – 4, 6, 8, 9, 10, 12, 14,
15,16, 18,20
Special notes:
1 is neither prime nor composite
2 is the only even number that is
prime
All other even numbers are
composite
Prime or Composite
29
Prime or Composite
34
Prime or Composite
47
Prime or Composite
51
Prime or Composite
65
Prime or Composite
71
Prime or Composite
77
Prime or Composite
83
Prime or Composite
10
5
Prime or Composite
12
3
Prime or Composite
174