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Mathematics
Craw Craw's user avatar
Craw Craw's user avatar
Craw Craw's user avatar
Craw Craw
  • Member for 2 years, 5 months
  • Last seen more than a week ago
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question
6
Euler's totient function and primes
Jun 23, 2022
question
3
Proof for a prime-generating sequence
Jun 30, 2022
question
3
Prime numbers which end with $19, 39, 59, 79$ or $99$
Dec 28, 2023
question
3
Prime numbers which end with 03, 23, 43, 63 or 83
Dec 31, 2023
question
3
Square of prime numbers
Dec 31, 2023
question
2
A question about divisor function and primes
Jun 25, 2022
question
1
Prove that $\lim_{n\to\infty} \frac{n}{p_n-n(\ln(n)+\ln(\ln(n))-1)} = \infty$
Jun 26, 2022
question
1
How to explain this result about $\pi$ and $\arctan$ function?
Jun 28, 2022
question
1
An approximation about the prime-counting function
Jun 29, 2022
question
1
Is there an infinite composite numbers $n$ such that $\sigma(\sigma(n)+n) = 2 \cdot \sigma(n)$
Mar 3, 2023
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12
Power of primes