Q: Is 671,878 a Prime Number?
A: No, 671,878 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 671878 can be evenly divided by 1 2 19 38 17,681 35,362 335,939 and 671,878, with no remainder.
Since 671,878 cannot be divided by just 1 and 671,878, it is not a prime number.