Matthew Parker’s Decoder #2017-01

Did you have a tough time cracking January’s stopwatch code? Here it is again:

Matthew's Decoder #2017-01

How It Works

First, multiply the minutes by 60 and add the remaining seconds to convert stopwatch times to total seconds: 179, 2, 151, 5 and 41.

This code uses additive primes—prime numbers whose digits add up to another prime number. For example, 83 is a number that can only be divided by 1 or itself, and so is 11 (8 + 3). That makes 83 an additive prime.

Substitute the total seconds on each watch for a letter using the additive primes table below.

2
3
5
7
11
23
29
41
43
47
61
67
83
89
101
113
131
137
139
151
157
173
179
191
193
197

A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z

Look for a new code in the next issue of Clubhouse magazine.

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