Q: Is 2,138,378 a Prime Number?
A: No, 2,138,378 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 2138378 can be evenly divided by 1 2 11 22 37 71 74 142 407 781 814 1,369 1,562 2,627 2,738 5,254 15,059 28,897 30,118 57,794 97,199 194,398 1,069,189 and 2,138,378, with no remainder.
Since 2,138,378 cannot be divided by just 1 and 2,138,378, it is not a prime number.