Q: Is 343,640 a Prime Number?
A: No, 343,640 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 343640 can be evenly divided by 1 2 4 5 8 10 11 20 22 40 44 55 71 88 110 121 142 220 242 284 355 440 484 568 605 710 781 968 1,210 1,420 1,562 2,420 2,840 3,124 3,905 4,840 6,248 7,810 8,591 15,620 17,182 31,240 34,364 42,955 68,728 85,910 171,820 and 343,640, with no remainder.
Since 343,640 cannot be divided by just 1 and 343,640, it is not a prime number.