Q: Is 165,440 a Prime Number?
A: No, 165,440 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 165440 can be evenly divided by 1 2 4 5 8 10 11 16 20 22 32 40 44 47 55 64 80 88 94 110 160 176 188 220 235 320 352 376 440 470 517 704 752 880 940 1,034 1,504 1,760 1,880 2,068 2,585 3,008 3,520 3,760 4,136 5,170 7,520 8,272 10,340 15,040 16,544 20,680 33,088 41,360 82,720 and 165,440, with no remainder.
Since 165,440 cannot be divided by just 1 and 165,440, it is not a prime number.