Q: Is 258,560 a Prime Number?
A: No, 258,560 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 258560 can be evenly divided by 1 2 4 5 8 10 16 20 32 40 64 80 101 128 160 202 256 320 404 505 512 640 808 1,010 1,280 1,616 2,020 2,560 3,232 4,040 6,464 8,080 12,928 16,160 25,856 32,320 51,712 64,640 129,280 and 258,560, with no remainder.
Since 258,560 cannot be divided by just 1 and 258,560, it is not a prime number.