Q: Is 122,640 a Prime Number?
A: No, 122,640 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 122640 can be evenly divided by 1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 28 30 35 40 42 48 56 60 70 73 80 84 105 112 120 140 146 168 210 219 240 280 292 336 365 420 438 511 560 584 730 840 876 1,022 1,095 1,168 1,460 1,533 1,680 1,752 2,044 2,190 2,555 2,920 3,066 3,504 4,088 4,380 5,110 5,840 6,132 7,665 8,176 8,760 10,220 12,264 15,330 17,520 20,440 24,528 30,660 40,880 61,320 and 122,640, with no remainder.
Since 122,640 cannot be divided by just 1 and 122,640, it is not a prime number.