Q: Is 133,840 a Prime Number?
A: No, 133,840 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 133840 can be evenly divided by 1 2 4 5 7 8 10 14 16 20 28 35 40 56 70 80 112 140 239 280 478 560 956 1,195 1,673 1,912 2,390 3,346 3,824 4,780 6,692 8,365 9,560 13,384 16,730 19,120 26,768 33,460 66,920 and 133,840, with no remainder.
Since 133,840 cannot be divided by just 1 and 133,840, it is not a prime number.