October 10 is the 283rd day of the year. There are 82 days left.

Today's number is 10

10 is the base of the decimal number system. Since many others such as 12 make more sense, we must assume that it is because humans have 10 manual digits.

September 5 is the 248th day of the year. There are 117 days left.

Today's number is 5

There are 24 days remaining until the end of the year.

7 is a prime (the 4th prime)