Q: Is 671,240 a Prime Number?
A: No, 671,240 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 671240 can be evenly divided by 1 2 4 5 8 10 20 40 97 173 194 346 388 485 692 776 865 970 1,384 1,730 1,940 3,460 3,880 6,920 16,781 33,562 67,124 83,905 134,248 167,810 335,620 and 671,240, with no remainder.
Since 671,240 cannot be divided by just 1 and 671,240, it is not a prime number.