Q: Is 1,003,878 a Prime Number?
A: No, 1,003,878 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 1003878 can be evenly divided by 1 2 3 6 9 18 43 86 129 258 387 774 1,297 2,594 3,891 7,782 11,673 23,346 55,771 111,542 167,313 334,626 501,939 and 1,003,878, with no remainder.
Since 1,003,878 cannot be divided by just 1 and 1,003,878, it is not a prime number.