11×59

11×59 denotes the product of the integers 11 and 59. The result is 649.

Calculation can be shown by a straightforward approach: 11×59 = 11×(60−1) = 660 − 11 = 649. This also reflects the common mental-math technique for multiplying by 11: for a two-digit number such as 59, the product 11×59 can be obtained by placing the sum of the digits (5+9 = 14) between the digits 5 and 9, yielding 5 14 9, which with carrying gives 649.

Numerical properties: both 11 and 59 are prime numbers, so 649 = 11 × 59 is a semiprime (a product of two distinct primes). The number 649 is odd and not divisible by 2, 3, 5, or 7; its prime factorization is exactly 11 and 59. The digit sum of 649 is 6+4+9 = 19, which confirms it is not divisible by 3.

Context and usage: the expression 11×59 is a basic example used in teaching multiplication, mental math, and factorization. It illustrates how products of primes combine to form a composite number and serves as a concrete instance of a two-prime semiprime.