What two number when multiplied equals 1821 (one thousand eight hundred twenty one)?
From the aboves multiple we can see that 1821 is a multiple of 4 numbers.
The numbers are 1, 3, 607, 1821
These numbers are called the factors of 1821.
3 x 607= 1821
A prime number is a number that is divisible only by 1 and itself (without a remainder).
1821 is not a prime number because it is divisible by other number than 1 and itself.
Lets learn factorization of other numbers.