Primes whose first and last number is 3: Difference between revisions
Primes whose first and last number is 3 (view source)
Revision as of 08:41, 4 September 2021
, 2 years ago→{{header|jq}}
(→{{header|ALGOL 68}}: Use ALGOL 68-primes) |
|||
Line 243:
Found 2,251 primes under 1,000,000 which begin and end with 3.
</pre>
=={{header|jq}}==
{{works with|jq}}
'''Works with gojq, the Go implementation of jq'''
See e.g. [[Erd%C5%91s-primes#jq]] for a suitable implementation of `is_prime`.
<lang jq># For the stretch goal:
def count(s): reduce s as $x (null; .+1);
def task:
(3, range(303;394;10), range(3003;3994;10) | select(is_prime)),
"\nStretch goal: \(count(
3,
range(303;394;10),
range(3003;3994;10),
range(30003;39994;10),
range(300003;399994;10)
| select(is_prime)))" ;
task</lang>
{{out}}
<pre>
3
313
353
373
383
3023
3083
3163
3203
3253
3313
3323
3343
3373
3413
3433
3463
3533
3583
3593
3613
3623
3643
3673
3733
3793
3803
3823
3833
3853
3863
3923
3943
Stretch goal: 2251
</pre>
| |||