Carcass wrote:
What is the smallest prime factor of
1,532,475?
Kudos for the right answer and explanation
We can immediately see that 1,532,475 is NOT divisible by 2.
And we can see that 1,532,475 IS divisible by 5
At this point, we need only determine whether 1,532,475 is divisible by 3
If an integer is divisible by 3, then the sum of its digits will be divisible by 3.
1+5+3+2+4+7+5 =27, and since 27 is divisible by 3, we know that 1,532,475 is divisible by 3.
Answer: 3