Q: Is 3,121,500 a Prime Number?
A: No, 3,121,500 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 3121500 can be evenly divided by 1 2 3 4 5 6 10 12 15 20 25 30 50 60 75 100 125 150 250 300 375 500 750 1,500 2,081 4,162 6,243 8,324 10,405 12,486 20,810 24,972 31,215 41,620 52,025 62,430 104,050 124,860 156,075 208,100 260,125 312,150 520,250 624,300 780,375 1,040,500 1,560,750 and 3,121,500, with no remainder.
Since 3,121,500 cannot be divided by just 1 and 3,121,500, it is not a prime number.