You are watching: Every natural number is divisible by 1
Is there a proof because that this?
Hint $\ $ If $n > 1$ climate its least element $> 1$ is prime. $\ $ And similarly for polynomials:
$\qquad\ \ $ if f(x) is nonconstant climate its least-degree nonconstant factor is irreducible.
And likewise for Gaussian integers, by taking the least-norm nonunit factor, etc.
Yes (modulo Brian"s comment.)
Hint: intend not, and also let $n$ be the least herbal number $\ge 2$ that is no divisible through a prime. In particular, $n$ is not prime, so...
Let $P(n)$ it is in the statement, "$n$ is divisible by a element number." since 2 is prime and 2 divides itself, it follows that $P(2)$ is true. This serves together the based instance of the induction.Let $m>2$ and assume that $P(k)$ is true for all $k$ whereby $2\le k2$ was arbitrary, the result follows by complete Induction.
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