Q: Is 1,550,000 a Prime Number?
A: No, 1,550,000 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 1550000 can be evenly divided by 1 2 4 5 8 10 16 20 25 31 40 50 62 80 100 124 125 155 200 248 250 310 400 496 500 620 625 775 1,000 1,240 1,250 1,550 2,000 2,480 2,500 3,100 3,125 3,875 5,000 6,200 6,250 7,750 10,000 12,400 12,500 15,500 19,375 25,000 31,000 38,750 50,000 62,000 77,500 96,875 155,000 193,750 310,000 387,500 775,000 and 1,550,000, with no remainder.
Since 1,550,000 cannot be divided by just 1 and 1,550,000, it is not a prime number.