Fun with Primes: Sum of Primes
Primes Composed of a Sum of
Primes
Separated by 2
5 = 2 + 3
7 = 2 + 5
13 = 2 + 11
19 = 2 + 17
43 = 2 + 41
61 = 2 + 59
151 = 2 + 149
193 = 2 + 191
Other Sums
23 = 2 + 3 + 5
+ 13
31 = 7 + 11 +
13
47 = 5 + 19 +
23
59 = 7 + 23 +29
71 = 3 + 31 +37
79 = 13 + 19
+47
79 = 5 + 31 +43
83 = 11 + 31+
41
101 = 3 + 31 + 67
107 = 19 + 29
+59
109 = 3 + 47+
59
113 = 11 + 41
+61
127 = 17 + 43 +
67
127 = 2 + 29 +
37 + 59
131 = 41 + 43 +
47
151 = 11 + 67 +
73
157 = 13 + 47 +
97
173 = 43 + 59 +
71
199 = 43 + 47 +
109
223 = 71 + 73 +
79
233 = 59 + 67 +
107
311 = 29 + 47 +
59 + 67 + 109
Primes Composed of a Sum and
Product of Primes
31 = 2 * 5 + 7
* 3
43 = 17 + 2 *
13
47 = 2 * 7 + 3
* 11
61 = 2 * 11 + 3
*13
79 = 2 * 7 + 5
* 13
83 = 47 + 2 *
(5 + 13)
89 = 7 + 2 * 41
149 = 2 * 17 + 5
* 23
149 = 2 * 59 +
31
163 = 2 + 7 *
23
What other combinations
you find?
Eddie
This blog is
property of Edward Shore, 2016.