Q: Is 145,840 a Prime Number?
A: No, 145,840 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 145840 can be evenly divided by 1 2 4 5 8 10 16 20 40 80 1,823 3,646 7,292 9,115 14,584 18,230 29,168 36,460 72,920 and 145,840, with no remainder.
Since 145,840 cannot be divided by just 1 and 145,840, it is not a prime number.