Prime Numbers
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11, 13, 17, 19
10's Primes
101, 103, 107, 109
100's Primes
2, 3, 5, 7
1st 4 Primes
23, 29
20's Primes
31, 37
30's Primes
41, 43, 47
40's Primes
53, 59
50's Primes
61, 67
60's Primes
71, 73, 79
70's Primes
83, 89
80's Primes
97
90's Primes
997
Largest 3-Digit Prime
9973
Largest 4-Digit Prime
25
Number of Primes < 100
Only factors are itself and 1
Prime Number
Share no common factors
Relatively Prime
1009
Smallest 4-Digit Prime
3 x 17
Why is 51 not prime?
3 x 19
Why is 57 not prime?
3 x 29
Why is 87 not prime?
7 x 13
Why is 91 not prime?