Q: Is 145,145 a Prime Number?
A: No, 145,145 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 145145 can be evenly divided by 1 5 7 11 13 29 35 55 65 77 91 143 145 203 319 377 385 455 715 1,001 1,015 1,595 1,885 2,233 2,639 4,147 5,005 11,165 13,195 20,735 29,029 and 145,145, with no remainder.
Since 145,145 cannot be divided by just 1 and 145,145, it is not a prime number.