Prime Time : 1.List all the prime numbers less than 20 2. 3 ._______ is the factor of every number . 4.The number that has only two factors , one and itself is called ___________. 5.The number that has more than two factors is called ___________. 6.______ is a unique number because __________________________. 7._________ is the smallest prime number . 8._________is the the only even prime number . 9.__________is the smallest odd prime number . 10. _________is the smallest composite number .