After solving a couple of level 3 puzzles, you are ready to give a level 4 puzzle a try. It isn’t any more difficult to solve than a level 3, except that the clues are not given in a logical order. Don’t let that stop you from succeeding!

Print the puzzles or type the solution in this excel file: 10 Factors 1373-1388

Now I’ll share some information about the number 1382:

- 1382 is a composite number.
- Prime factorization: 1382 = 2 × 691
- 1382 has no exponents greater than 1 in its prime factorization, so √1382 cannot be simplified.
- The exponents in the prime factorization are 1, and 1. Adding one to each exponent and multiplying we get (1 + 1)(1 + 1) = 2 × 2 = 4. Therefore 1382 has exactly 4 factors.
- The factors of 1382 are outlined with their factor pair partners in the graphic below.

1382 is in one Pythagorean triple:

1382-477480-477482 calculated from 2(691)(1), 691² – 1², 691² + 1²

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