Q: Is 515,640 a Prime Number?
A: No, 515,640 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 515640 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 4,297 8,594 12,891 17,188 21,485 25,782 34,376 42,970 51,564 64,455 85,940 103,128 128,910 171,880 257,820 and 515,640, with no remainder.
Since 515,640 cannot be divided by just 1 and 515,640, it is not a prime number.