n x 10 + m is the formula that describes
- the ‘digital composition‘ of
- Leading Digits x 10 + Last Digit
- of “Digital” Decimal Numbers.
This complements the ‘positional notation‘ of the decimal number system and offers considerable advantages with respect to Digital Visualisations.
With respect to Prime Numbers,
- the distinction between “Prime Digits” 2 3 5 7 and Prime Numbers > 10 shows
- that 2 and 5 are the ‘pillars’ of decimal sums and products which is different from
- the Last Digits 1 3 7 9 that identify Prime Numbers.
“Digital Tables” for Primes
diagonally staggered vertical pairs of Primes and SemiPrimes
“Digital Tables” for “SemiPrime Series”
The question to be investigated is: what type of numbers are the ones that don’t fit the pattern?
What type of sums or products fill the white spaces?