Q: Is 581,000 a Prime Number?
A: No, 581,000 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 581000 can be evenly divided by 1 2 4 5 7 8 10 14 20 25 28 35 40 50 56 70 83 100 125 140 166 175 200 250 280 332 350 415 500 581 664 700 830 875 1,000 1,162 1,400 1,660 1,750 2,075 2,324 2,905 3,320 3,500 4,150 4,648 5,810 7,000 8,300 10,375 11,620 14,525 16,600 20,750 23,240 29,050 41,500 58,100 72,625 83,000 116,200 145,250 290,500 and 581,000, with no remainder.
Since 581,000 cannot be divided by just 1 and 581,000, it is not a prime number.