Q: Is 661,430 a Prime Number?
A: No, 661,430 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 661430 can be evenly divided by 1 2 5 7 10 11 14 22 35 55 70 77 110 154 385 770 859 1,718 4,295 6,013 8,590 9,449 12,026 18,898 30,065 47,245 60,130 66,143 94,490 132,286 330,715 and 661,430, with no remainder.
Since 661,430 cannot be divided by just 1 and 661,430, it is not a prime number.