Q: Is 2,123,125 a Prime Number?
A: No, 2,123,125 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 2123125 can be evenly divided by 1 5 25 43 79 125 215 395 625 1,075 1,975 3,397 5,375 9,875 16,985 26,875 49,375 84,925 424,625 and 2,123,125, with no remainder.
Since 2,123,125 cannot be divided by just 1 and 2,123,125, it is not a prime number.