126 is NOT a prime number: 126 = 2 * 3 * 3 * 7
Work Shown
126 is divisible by 2: 126 = 63 * 2.
63 is divisible by 3: 63 = 21 * 3.
21 is divisible by 3: 21 = 7 * 3.
7 is not divisible by anything.
This calculation used this Prime Factorization Algorithm.
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