Q: Is 1,375,125 a Prime Number?
A: No, 1,375,125 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 1375125 can be evenly divided by 1 3 5 15 19 25 57 75 95 125 193 285 375 475 579 965 1,425 2,375 2,895 3,667 4,825 7,125 11,001 14,475 18,335 24,125 55,005 72,375 91,675 275,025 458,375 and 1,375,125, with no remainder.
Since 1,375,125 cannot be divided by just 1 and 1,375,125, it is not a prime number.