Primes Twin Primes — Set 21
| 6 | 0 | 9 | 6 | 1 | 2 | 3 | 6 | 0 | 3 | 0 | 3 |
| 6 | 9 | 8 | 5 | 4 | 1 | 4 | 7 | 5 | 9 | 7 | 3 |
| 4 | 3 | 0 | 5 | 1 | 9 | 1 | 6 | 0 | 1 | 2 | 2 |
| 9 | 9 | 0 | 8 | 9 | 6 | 9 | 2 | 3 | 9 | 6 | 8 |
| 1 | 8 | 8 | 1 | 3 | 1 | 3 | 2 | 2 | 1 | 3 | 2 |
| 0 | 9 | 1 | 9 | 7 | 5 | 1 | 9 | 4 | 8 | 9 | 4 |
| 0 | 6 | 4 | 3 | 7 | 6 | 7 | 0 | 5 | 2 | 2 | 3 |
| 7 | 2 | 3 | 3 | 8 | 2 | 1 | 1 | 8 | 6 | 2 | 8 |
| 8 | 3 | 5 | 9 | 7 | 9 | 9 | 9 | 2 | 5 | 4 | 1 |
| 8 | 3 | 1 | 3 | 4 | 4 | 0 | 7 | 7 | 0 | 3 | 2 |
| 1 | 2 | 0 | 2 | 5 | 3 | 9 | 3 | 9 | 4 | 6 | 0 |
| 8 | 2 | 5 | 5 | 9 | 0 | 0 | 4 | 0 | 7 | 0 | 6 |
Numbers to Find
- 12
- 3245
- 430
- 981
- 2639
- 9979
- 6985
- 0704
Show answer key
- : 6,2 (diagonal-down-right)
- : 8,3 (down)
- : 0,2 (right)
- : 0,3 (diagonal-down-right)
- : 10,2 (down)
- : 6,8 (left)
- : 0,1 (right)
- : 10,11 (left)
Activity Notes
Search for twin primes in these specialized puzzles. Twin primes are pairs of prime numbers that differ by exactly 2, like 3-5, 5-7, and 11-13.
Twin Prime Numbers
Twin primes are pairs of primes that differ by exactly 2: (3,5), (5,7), (11,13), (17,19), (29,31), (41,43), and so on. These special number pairs have fascinated mathematicians for centuries. This unique puzzle type challenges you to find these rare and mathematically significant pairs.
The Twin Prime Conjecture remains one of mathematics' great unsolved mysteries—is there an infinite number of twin primes? Exploring twin primes through puzzles connects you to real mathematical research and open problems.
Tips for Finding Twin Primes
- Look for prime pairs separated by 2: If you spot one prime, the number 2 higher or lower might be a twin.
- Remember the pattern: (3,5), (5,7), (11,13), (17,19), (29,31), (41,43), (59,61), (71,73)... These are common twin pairs.
- Twin primes get rarer: As numbers grow larger, twin primes become increasingly rare, making larger pairs especially exciting to find.
What is a twin primes number search puzzle?
A twin primes number search asks you to find pairs of prime numbers that differ by exactly 2, such as (3, 5), (5, 7), (11, 13), (17, 19), (29, 31), (41, 43), (59, 61), and (71, 73).
What makes twin primes special?
Twin primes are among the most studied objects in number theory. Whether there are infinitely many twin prime pairs remains one of the great unsolved problems in mathematics.
How does the twin primes puzzle differ from other prime puzzles?
Instead of finding isolated primes, you need to locate both members of each pair. This adds an extra layer of challenge because you must confirm that two nearby numbers are both prime and exactly 2 apart.