Q: Is 1,377,688 a Prime Number?
A: No, 1,377,688 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 1377688 can be evenly divided by 1 2 4 8 13 26 52 104 169 338 676 1,019 1,352 2,038 4,076 8,152 13,247 26,494 52,988 105,976 172,211 344,422 688,844 and 1,377,688, with no remainder.
Since 1,377,688 cannot be divided by just 1 and 1,377,688, it is not a prime number.