73 7-3 = 4 73 is prime and 37 is prime.
9973
1009
The ratio of the number of one-digit prime numbers to the number of one-digit composite numbers is one to one. The one-digit prime numbers are 2, 3, 5, and 7. The one-digit composite numbers are 4, 6, 8, and 9. Therefor, the ratio is 4:4, which simplifies to 1:1.
9409
The largest four-digit prime number is 9973.
73 7-3 = 4 73 is prime and 37 is prime.
In order of smallest to largest, 2,357 In opposite order the highest number would be 7,532.
The diference between the highest 4 digit number and the lowest 3 digit number is 9999 Highest 4 digit: 9999 Lowest 3 digit: 000
73
304 is NOT a prime number because its last digit is 4, an even digit causing it to be divisible by 2.
9973
1009
It is 9,999
4/4 = 1
The highest six-digit number divisible by 3, 4, and 5 is 999960.
No prime number can be divided by 4 exactly.