Is 258 a composite number

Answer 1

That '8' at the end of it is an immediate tip-off.

That tells you that '258' is an even number. All even numbers are composite,

because they're all multiples of 2.

It so happens that 258 is also divisible by 3, 6, 43, 86, and 129. Any one of these

makes it a composite number. But just knowing that it's an even number was enough

to tell us that.

Answer 2

Yes.