The product 2 x 3 x 7 x 11 x 23 equals:

1. Multiply in stages to keep the arithmetic clean. 2. 7 x 11 = 77, and 77 x 23 = 1771. 3. Now bring in the remaining factors: 2 x 3 = 6. 4. So the product is 6 x 1771 = 10626. 5. 1771 is only the last three factors, and 5313 is 3 x 1771, so both are partial products. _Source: syllabus Maths, Ch 1 'Real Numbers', S1.2 The Fundamental Theorem of Arithmetic_