Q: Is 243,000 a Prime Number?
A: No, 243,000 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 243000 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 18 20 24 25 27 30 36 40 45 50 54 60 72 75 81 90 100 108 120 125 135 150 162 180 200 216 225 243 250 270 300 324 360 375 405 450 486 500 540 600 648 675 750 810 900 972 1,000 1,080 1,125 1,215 1,350 1,500 1,620 1,800 1,944 2,025 2,250 2,430 2,700 3,000 3,240 3,375 4,050 4,500 4,860 5,400 6,075 6,750 8,100 9,000 9,720 10,125 12,150 13,500 16,200 20,250 24,300 27,000 30,375 40,500 48,600 60,750 81,000 121,500 and 243,000, with no remainder.
Since 243,000 cannot be divided by just 1 and 243,000, it is not a prime number.