Q: Is 77,760 a Prime Number?
A: No, 77,760 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 77760 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 32 36 40 45 48 54 60 64 72 80 81 90 96 108 120 135 144 160 162 180 192 216 240 243 270 288 320 324 360 405 432 480 486 540 576 648 720 810 864 960 972 1,080 1,215 1,296 1,440 1,620 1,728 1,944 2,160 2,430 2,592 2,880 3,240 3,888 4,320 4,860 5,184 6,480 7,776 8,640 9,720 12,960 15,552 19,440 25,920 38,880 and 77,760, with no remainder.
Since 77,760 cannot be divided by just 1 and 77,760, it is not a prime number.