Q: Is 1,388,400 a Prime Number?
A: No, 1,388,400 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 1388400 can be evenly divided by 1 2 3 4 5 6 8 10 12 13 15 16 20 24 25 26 30 39 40 48 50 52 60 65 75 78 80 89 100 104 120 130 150 156 178 195 200 208 240 260 267 300 312 325 356 390 400 445 520 534 600 624 650 712 780 890 975 1,040 1,068 1,157 1,200 1,300 1,335 1,424 1,560 1,780 1,950 2,136 2,225 2,314 2,600 2,670 3,120 3,471 3,560 3,900 4,272 4,450 4,628 5,200 5,340 5,785 6,675 6,942 7,120 7,800 8,900 9,256 10,680 11,570 13,350 13,884 15,600 17,355 17,800 18,512 21,360 23,140 26,700 27,768 28,925 34,710 35,600 46,280 53,400 55,536 57,850 69,420 86,775 92,560 106,800 115,700 138,840 173,550 231,400 277,680 347,100 462,800 694,200 and 1,388,400, with no remainder.
Since 1,388,400 cannot be divided by just 1 and 1,388,400, it is not a prime number.