What two number when multiplied equals 521 (five hundred twenty one)?
From the aboves multiple we can see that 521 is a multiple of 2 numbers.
The numbers are 1, 521
These numbers are called the factors of 521.
521= 521
A prime number is a number that is divisible only by 1 and itself (without a remainder).
521 is a prime number because it has only two factors 1 and itself.
Lets learn factorization of other numbers.