Is 1998533 a Prime Number

YES

1998533 is a prime number.

1998533 is not a composite number, it only has factor 1 and itself.

Prime Index of 1998533

Prime Numbe Index: 148837 th
The 1998533 rd prime number: 32427193
Hex format: 1E7EC5
Binary format: 0b111100111111011000101

Check Numbers related to 1998533