This factorial calculator will compute the factorial; just enter a positive integer number less than 170. After you click factorate the result will be displayed in the output.

Write out the sequence of numbers to be multiplied. A factorial is simply multiplying the natural numbers that descend sequentially from the factorial number, down to 1.

To factoring in general, it may be interesting to use the tree of factors to prevent the forgetting factors.

- Write out the factors of each factorial.

- Cancel out any terms common to the numerator and denominator.

- Complete the calculations. Simplify if possible.

5! = 5 * 4 * 3 * 2 * 1 = 120

6! = 120 * 6 = 720

52! = 8.06581751709439e+67

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