Q: Is 311,240 a Prime Number?
A: No, 311,240 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 311240 can be evenly divided by 1 2 4 5 8 10 20 31 40 62 124 155 248 251 310 502 620 1,004 1,240 1,255 2,008 2,510 5,020 7,781 10,040 15,562 31,124 38,905 62,248 77,810 155,620 and 311,240, with no remainder.
Since 311,240 cannot be divided by just 1 and 311,240, it is not a prime number.