The smallest odd integer with exactly 6 factors is 945. This number can be expressed as (3^3 \times 5^1 \times 7^1). The number of factors is calculated using the formula ((e_1 + 1)(e_2 + 1)(e_3 + 1)), where (e_i) are the exponents in the prime factorization. For 945, the factors count is ((3+1)(1+1)(1+1) = 4 \times 2 \times 2 = 16), so we need to adjust to find the correct configuration. The correct number with exactly 6 factors is (3^5), which equals 243, as it has factors calculated as ((5+1) = 6).
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The smallest is 121.
3, which can be divided by the odd numbers 1 and 3.
Every integer is either even (divisible by 2) or odd (not divisible by 2). Since an even number plus 1 is odd and an odd number plus one is even, because 1 does not divide 2. We know (n + 4) is odd. The next integer is (n + 4 + 1) = (n + 5), because an odd number plus 1 is even, (n + 5) is even. The integer after (n + 5) is (n + 6), since (n + 5) we know is even, (n + 6) must be odd. Since (n + 6) is the smallest integer that is greater than (n + 4) and is odd, so (n + 6) is the next odd integer.
Any positive integer with more than two factors is composite.
If x is the smallest odd integer, then x = 2n + 1 for some integer n. Then the next two odd integers are 2n + 3 and 2n + 5 So the question then becomes: 2n+1 + (2n+3) + (2n+5) = 45 or 6n + 9 = 45 to be solved for n and thence the smallest of the three consecutive odd integers.