Q: Is 361,820 a Prime Number?
A: No, 361,820 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 361820 can be evenly divided by 1 2 4 5 10 20 79 158 229 316 395 458 790 916 1,145 1,580 2,290 4,580 18,091 36,182 72,364 90,455 180,910 and 361,820, with no remainder.
Since 361,820 cannot be divided by just 1 and 361,820, it is not a prime number.