156 is a not a Prime number. A prime number is a number that only can divided by 1 and itself. Examples of Primes is 1, 2,3, 5, 7, 11, 13, 17..........................
156 factors include 1,2,3,4,6,12,13,26,39,52,78,156. A easy way to figure out if a prime number is a prime number or not look and see if the last digit in the number. If the digit is even is it not a prime number.
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156 = 2 x 2 x 3 x 13
Expressed as a product of its prime factors, 156 is equal to 22 x 3 x 13. The only prime factors for 156 are 3 and 13. Though these are not used in the same equation.
2X2X3x13
156 = 2 x 2 x 3 x 13.
None of these numbers are prime: 91 is divisible by 7 117 is divisible by 3 84 and 156 are both divisible by 2