Q: Is 145,780 a Prime Number?
A: No, 145,780 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 145780 can be evenly divided by 1 2 4 5 10 20 37 74 148 185 197 370 394 740 788 985 1,970 3,940 7,289 14,578 29,156 36,445 72,890 and 145,780, with no remainder.
Since 145,780 cannot be divided by just 1 and 145,780, it is not a prime number.