Q: Is 1,720,400 a Prime Number?
A: No, 1,720,400 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 1720400 can be evenly divided by 1 2 4 5 8 10 11 16 17 20 22 23 25 34 40 44 46 50 55 68 80 85 88 92 100 110 115 136 170 176 184 187 200 220 230 253 272 275 340 368 374 391 400 425 440 460 506 550 575 680 748 782 850 880 920 935 1,012 1,100 1,150 1,265 1,360 1,496 1,564 1,700 1,840 1,870 1,955 2,024 2,200 2,300 2,530 2,992 3,128 3,400 3,740 3,910 4,048 4,301 4,400 4,600 4,675 5,060 6,256 6,325 6,800 7,480 7,820 8,602 9,200 9,350 9,775 10,120 12,650 14,960 15,640 17,204 18,700 19,550 20,240 21,505 25,300 31,280 34,408 37,400 39,100 43,010 50,600 68,816 74,800 78,200 86,020 101,200 107,525 156,400 172,040 215,050 344,080 430,100 860,200 and 1,720,400, with no remainder.
Since 1,720,400 cannot be divided by just 1 and 1,720,400, it is not a prime number.