Q: Is 400,100 a Prime Number?
A: No, 400,100 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 400100 can be evenly divided by 1 2 4 5 10 20 25 50 100 4,001 8,002 16,004 20,005 40,010 80,020 100,025 200,050 and 400,100, with no remainder.
Since 400,100 cannot be divided by just 1 and 400,100, it is not a prime number.