# Opinion: Numerical extravaganza for Valentine's Day

By Aziz Inan | February 14, 2019 1:53pm

Here are 10 number extravaganza that you are welcome to share to celebrate today’s Valentine’s Day:

1. The product of the month and day numbers of Valentine’s Day, namely 2 and 14, equals 28 and interestingly, twice the 28th prime number, namely 107, yields 214, that is, 2/14.

2. Furthermore, the reverse of 214, namely 412, equals 2 x 2 x 103 and twice the sum of 2, 2, and 103, namely 107, give back 214 too.

3. Moreover, this year has 321 days left including today’s Valentine’s Day and interestingly, 321 equals 3 times 107. (Note that a leap year would have 321 days after Valentine’s Day.)

4. The sum of the squares of the digits of today’s Valentine’s Day expressed as 2/14/2019 also equals 107.

5. In 2025, Valentine’s Day will be special since it always occurs on the 45th day of each year and 45 square equals 2025.

6. Valentine’s Day in 2028 expressed as 2/14/28 will also be special since 28 is 2 times 14.

7. If Valentine’s Day in 2033 expressed as 02/14/2033 is split in the middle as 0214 and 2033, half of 0214 is 107, the digits of 107 add up to 8, the 8th prime number is 19, and 19 times 107 equals 2033. Also, the sum of the prime factors of the reverse of 2033, namely 3302, equals 2 + 13 + 127 = 142 and 142 interpreted in day/month date format represents 14 February (Valentine’s Day).

8. Valentine’s Day in 2041 expressed as 02/14/2041 will be special because the left and right halves of this date contain the same digits 0, 1, 2, and 4, in different order.

9. Additionally, 02/14/2041 expressed in the day/month/year date format as 14/02/2041 will be an eight-digit palindrome Valentine’s Day.

10. Lastly, Valentine’s Day in 2060 expressed as 02/14/2060 will also be special because if this date number is split as 0214 and 2060, twice 2060 equals 4120, the reverse of 0214.

Happy Valentine’s Day!

Aziz Inan is chair and professor of electrical engineering at University of Portland and he can be reached at ainan@up.edu.

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