Q: Is 1,643,000 a Prime Number?
A: No, 1,643,000 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 1643000 can be evenly divided by 1 2 4 5 8 10 20 25 31 40 50 53 62 100 106 124 125 155 200 212 248 250 265 310 424 500 530 620 775 1,000 1,060 1,240 1,325 1,550 1,643 2,120 2,650 3,100 3,286 3,875 5,300 6,200 6,572 6,625 7,750 8,215 10,600 13,144 13,250 15,500 16,430 26,500 31,000 32,860 41,075 53,000 65,720 82,150 164,300 205,375 328,600 410,750 821,500 and 1,643,000, with no remainder.
Since 1,643,000 cannot be divided by just 1 and 1,643,000, it is not a prime number.