Q: Is 247,640 a Prime Number?
A: No, 247,640 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 247640 can be evenly divided by 1 2 4 5 8 10 20 40 41 82 151 164 205 302 328 410 604 755 820 1,208 1,510 1,640 3,020 6,040 6,191 12,382 24,764 30,955 49,528 61,910 123,820 and 247,640, with no remainder.
Since 247,640 cannot be divided by just 1 and 247,640, it is not a prime number.