Q: Is 345,520 a Prime Number?
A: No, 345,520 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 345520 can be evenly divided by 1 2 4 5 7 8 10 14 16 20 28 35 40 56 70 80 112 140 280 560 617 1,234 2,468 3,085 4,319 4,936 6,170 8,638 9,872 12,340 17,276 21,595 24,680 34,552 43,190 49,360 69,104 86,380 172,760 and 345,520, with no remainder.
Since 345,520 cannot be divided by just 1 and 345,520, it is not a prime number.