Q: Is 787,320 a Prime Number?
A: No, 787,320 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 787320 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 18 20 24 27 30 36 40 45 54 60 72 81 90 108 120 135 162 180 216 243 270 324 360 405 486 540 648 729 810 972 1,080 1,215 1,458 1,620 1,944 2,187 2,430 2,916 3,240 3,645 4,374 4,860 5,832 6,561 7,290 8,748 9,720 10,935 13,122 14,580 17,496 19,683 21,870 26,244 29,160 32,805 39,366 43,740 52,488 65,610 78,732 87,480 98,415 131,220 157,464 196,830 262,440 393,660 and 787,320, with no remainder.
Since 787,320 cannot be divided by just 1 and 787,320, it is not a prime number.