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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
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F is_prime(a)
I a == 2
R 1B
I a < 2 | a % 2 == 0
R 0B
L(i) (3 .. Int(sqrt(a))).step(2)
I a % i == 0
R 0B
R 1B
F digit_sum(=n)
V sum = 0
L n > 0
sum += n % 10
n I/= 10
R sum
V additive_primes = 0
L(i) 2..499
I is_prime(i) & is_prime(digit_sum(i))
additive_primes++
print(i, end' )
print("\nFound "additive_primes additive primes less than 500)