Q: Is 621,120 a Prime Number?
A: No, 621,120 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 621120 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 64 80 96 120 160 192 240 320 480 647 960 1,294 1,941 2,588 3,235 3,882 5,176 6,470 7,764 9,705 10,352 12,940 15,528 19,410 20,704 25,880 31,056 38,820 41,408 51,760 62,112 77,640 103,520 124,224 155,280 207,040 310,560 and 621,120, with no remainder.
Since 621,120 cannot be divided by just 1 and 621,120, it is not a prime number.