Q: Is 343,125 a Prime Number?
A: No, 343,125 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 343125 can be evenly divided by 1 3 5 9 15 25 45 61 75 125 183 225 305 375 549 625 915 1,125 1,525 1,875 2,745 4,575 5,625 7,625 13,725 22,875 38,125 68,625 114,375 and 343,125, with no remainder.
Since 343,125 cannot be divided by just 1 and 343,125, it is not a prime number.