Q: Is 121,520 a Prime Number?
A: No, 121,520 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 121520 can be evenly divided by 1 2 4 5 7 8 10 14 16 20 28 31 35 40 49 56 62 70 80 98 112 124 140 155 196 217 245 248 280 310 392 434 490 496 560 620 784 868 980 1,085 1,240 1,519 1,736 1,960 2,170 2,480 3,038 3,472 3,920 4,340 6,076 7,595 8,680 12,152 15,190 17,360 24,304 30,380 60,760 and 121,520, with no remainder.
Since 121,520 cannot be divided by just 1 and 121,520, it is not a prime number.