3×37

3×37 denotes the product of the integers 3 and 37. The calculation yields 111.

Both factors are prime numbers, so the product 3×37 is a semiprime, the product of exactly two primes. In decimal form, the result is the three-digit number 111, a repunit consisting of three consecutive ones. The product can be expressed as 111 = (10^3 − 1)/9, and it is divisible by 3, with 111/3 = 37 and 111/37 = 3. The divisors of 111 are 1, 3, 37, and 111.

111 has further arithmetic interest: it is the sum of the digits that make up the number and serves as the product 3×37. It is also related to 999, since 9×111 = 999, and 27×37 = 999; thus multiplying 3×37 by 9 yields 999. In Roman numerals, 111 is CXI.

In a broader mathematical context, 3 and 37 are both prime, so their product is a basic example of factorization into primes. The number 111 itself appears in various numerical curiosities due to its status as a repunit and its simple factorization, illustrating how multiplication of small primes can produce neatly structured decimal patterns.