Q: Is 401,800 a Prime Number?
A: No, 401,800 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 401800 can be evenly divided by 1 2 4 5 7 8 10 14 20 25 28 35 40 41 49 50 56 70 82 98 100 140 164 175 196 200 205 245 280 287 328 350 392 410 490 574 700 820 980 1,025 1,148 1,225 1,400 1,435 1,640 1,960 2,009 2,050 2,296 2,450 2,870 4,018 4,100 4,900 5,740 7,175 8,036 8,200 9,800 10,045 11,480 14,350 16,072 20,090 28,700 40,180 50,225 57,400 80,360 100,450 200,900 and 401,800, with no remainder.
Since 401,800 cannot be divided by just 1 and 401,800, it is not a prime number.