Q: Is 265,440 a Prime Number?
A: No, 265,440 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 265440 can be evenly divided by 1 2 3 4 5 6 7 8 10 12 14 15 16 20 21 24 28 30 32 35 40 42 48 56 60 70 79 80 84 96 105 112 120 140 158 160 168 210 224 237 240 280 316 336 395 420 474 480 553 560 632 672 790 840 948 1,106 1,120 1,185 1,264 1,580 1,659 1,680 1,896 2,212 2,370 2,528 2,765 3,160 3,318 3,360 3,792 4,424 4,740 5,530 6,320 6,636 7,584 8,295 8,848 9,480 11,060 12,640 13,272 16,590 17,696 18,960 22,120 26,544 33,180 37,920 44,240 53,088 66,360 88,480 132,720 and 265,440, with no remainder.
Since 265,440 cannot be divided by just 1 and 265,440, it is not a prime number.