10 Do We Need the Digits of $\pi$? 7 What is the next number? 7 Question related to regular pentagon 7 Finding solutions to $(4x^2+1)(4y^2+1) = (4z^2+1)$ 5 How is this read correctly (problem with brackets)? 2^2048 - 2^1984 - 1 + 2^64 * { [2^1918 pi] + 124476 }

### Reputation (2,811)

 +28 Fastest way to compute A108571 series +10 Do We Need the Digits of $\pi$? +10 Parsing absolute value signs: Does $|x|x|x| =|x|\cdot x \cdot |x|$ or ${\large|} x\cdot |x| \cdot x{ \large |}$? +10 Maximum area of a triangle

### Questions (7)

 14 Maximum area of a triangle 13 Losing at Spider Solitaire 9 The sum of the first $n$ squares is a square: a system of two Pell-type-equations 6 On the pronunciation of the second derivative 6 Properties of Fermat primes

### Tags (74)

 18 geometry × 7 11 calculus × 6 15 number-theory × 11 11 diophantine-equations × 5 14 elementary-number-theory × 12 10 pi × 2 13 algebra-precalculus × 12 10 big-list 12 recreational-mathematics × 3 9 computer-science × 2

### Bookmarks (44)

 127 Is there an integral that proves $\pi > 333/106$? 96 $4494410$ and friends 70 Are there infinitely many "super-palindromes"? 51 A conjecture involving prime numbers and circles 38 What is the sum of sum of digits of $4444^{4444^{4444}}$?