Q: Is 243,520 a Prime Number?
A: No, 243,520 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 243520 can be evenly divided by 1 2 4 5 8 10 16 20 32 40 64 80 160 320 761 1,522 3,044 3,805 6,088 7,610 12,176 15,220 24,352 30,440 48,704 60,880 121,760 and 243,520, with no remainder.
Since 243,520 cannot be divided by just 1 and 243,520, it is not a prime number.