Q: Is 640,003 a Composite Number?
A: Yes, 640,003 is a composite number.
The number 640,003 can be evenly divided by 1 7 13 91 169 541 1,183 3,787 7,033 49,231 91,429 and 640,003, with no remainder.
Since 640,003 cannot be divided by just 1 and 640,003, it is a composite number.