Q: Is 155,400 a Prime Number?
A: No, 155,400 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 155400 can be evenly divided by 1 2 3 4 5 6 7 8 10 12 14 15 20 21 24 25 28 30 35 37 40 42 50 56 60 70 74 75 84 100 105 111 120 140 148 150 168 175 185 200 210 222 259 280 296 300 350 370 420 444 518 525 555 600 700 740 777 840 888 925 1,036 1,050 1,110 1,295 1,400 1,480 1,554 1,850 2,072 2,100 2,220 2,590 2,775 3,108 3,700 3,885 4,200 4,440 5,180 5,550 6,216 6,475 7,400 7,770 10,360 11,100 12,950 15,540 19,425 22,200 25,900 31,080 38,850 51,800 77,700 and 155,400, with no remainder.
Since 155,400 cannot be divided by just 1 and 155,400, it is not a prime number.