Q: Is 531,000 a Prime Number?
A: No, 531,000 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 531000 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 18 20 24 25 30 36 40 45 50 59 60 72 75 90 100 118 120 125 150 177 180 200 225 236 250 295 300 354 360 375 450 472 500 531 590 600 708 750 885 900 1,000 1,062 1,125 1,180 1,416 1,475 1,500 1,770 1,800 2,124 2,250 2,360 2,655 2,950 3,000 3,540 4,248 4,425 4,500 5,310 5,900 7,080 7,375 8,850 9,000 10,620 11,800 13,275 14,750 17,700 21,240 22,125 26,550 29,500 35,400 44,250 53,100 59,000 66,375 88,500 106,200 132,750 177,000 265,500 and 531,000, with no remainder.
Since 531,000 cannot be divided by just 1 and 531,000, it is not a prime number.