February 2011
Problem of the Month

2011 Prime Problem
idea from Elizabeth Cotter

2011 is a prime number and it can be written as the sum of 11 consecutive prime numbers!

Can you determine these 11 prime numbers?

Hint: 173, 199, and 211 are three of the consecutive primes.

Solution to the Problem:

The answer is 2011 = 157 + 163 + 167 + 173 + 179 + 181 + 191 + 193 + 197 + 199 + 211

Here are the first 50 primes and you can see that the 11 consecutive primes that make up 2011 are there:

2     3     5     7     11     13     17     19     23     29     31     37     41     43     47     53     59     61     67     71     73     79     83     89     97     101     103     107     109     113     127     131     137     139     149     151     157     163     167     173     179     181     191     193     197     199     211     223     227     229

Correctly solved by:

1. James Alarie	Flint, Michigan
2. Trey Briggs	Mountain View High School, Mountain View, Wyoming
3. John Funk	Ventura, California
4. Marissa Vitt	Mountain View High School, Mountain View, Wyoming
5. Steven R. Muller	Clear Brook Territory, Virginia
6. David & Judy Dixon	Bennettsville, South Carolina

Send any comments or questions to: David Pleacher