Q: Is 1,289,000 a Prime Number?
A: No, 1,289,000 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 1289000 can be evenly divided by 1 2 4 5 8 10 20 25 40 50 100 125 200 250 500 1,000 1,289 2,578 5,156 6,445 10,312 12,890 25,780 32,225 51,560 64,450 128,900 161,125 257,800 322,250 644,500 and 1,289,000, with no remainder.
Since 1,289,000 cannot be divided by just 1 and 1,289,000, it is not a prime number.