82, 85, 86, 87, 91, 93, 94 and 95 all have exactly 4 factors.
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17 If the number has only two factors, it must be a prime number. The only factors of 17 are 1 and 17. The difference between 1 and 17 is 16.
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There is no multiple of 369 between 61 and 107. A multiple is a number that the figure can divide into. The lowest number 369 can divide into is 369. Numbers that divide into it are its factors. None of its factors are between 61 and 107 though.
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