What two number when multiplied equals 1661 (one thousand six hundred sixty one)?
From the aboves multiple we can see that 1661 is a multiple of 4 numbers.
The numbers are 1, 11, 151, 1661
These numbers are called the factors of 1661.
11 x 151= 1661
A prime number is a number that is divisible only by 1 and itself (without a remainder).
1661 is not a prime number because it is divisible by other number than 1 and itself.
Lets learn factorization of other numbers.