Q: Is 266,240 a Prime Number?
A: No, 266,240 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 266240 can be evenly divided by 1 2 4 5 8 10 13 16 20 26 32 40 52 64 65 80 104 128 130 160 208 256 260 320 416 512 520 640 832 1,024 1,040 1,280 1,664 2,048 2,080 2,560 3,328 4,096 4,160 5,120 6,656 8,320 10,240 13,312 16,640 20,480 26,624 33,280 53,248 66,560 133,120 and 266,240, with no remainder.
Since 266,240 cannot be divided by just 1 and 266,240, it is not a prime number.