3.5
86420
It is a decimal number whose magnitude is one tenth as large.
84
The number is 9376.
123
930
36
36
The largest 3 digit number whose digits are all primes is 777. The largest 3 digit number with different prime digits is 753.
67
Find a four digit number whose digits will be reversed when multiplied by nine?
The largest three digit prime number whose digits are all primes is 773.