0
|
= 0 |
Zero |
1
|
= 1 |
One, Unity |
i
|
= √–1 |
Imaginary unit, unit imaginary number |
π
|
≈ 3.14159 26535 89793 23846 26433 83279 50288 |
Pi, Archimedes' constant or Ludolph's number |
e
|
≈ 2.71828 18284 59045 23536 02874 71352 66249 |
e, Napier's constant, or Euler's number |
√2
|
≈ 1.41421 35623 73095 04880 16887 24209 69807 |
Pythagoras' constant, square root of 2 |
√3
|
≈ 1.73205 08075 68877 29352 74463 41505 87236 |
Theodorus' constant, square root of 3 |
√5
|
≈ 2.23606 79774 99789 69640 91736 68731 27623 |
square root of 5 |
γ
|
≈ 0.57721 56649 01532 86060 65120 90082 40243 |
Euler–Mascheroni constant |
|
≈ 1.61803 39887 49894 84820 45868 34365 63811 |
Golden ratio |
Λ
|
≥ –1.1 · 10−12 |
de Bruijn–Newman constant |
M1
|
≈ 0.26149 72128 47642 78375 54268 38608 69585 |
Meissel–Mertens constant |
β
|
≈ 0.28016 94990 23869 13303 |
Bernstein's constant |
λ
|
≈ 0.30366 30028 98732 65859 74481 21901 55623 |
Gauss–Kuzmin–Wirsing constant |
σ
|
≈ 0.35323 63718 54995 98454 35165 50432 68201 |
Hafner–Sarnak–McCurley constant |
L
|
≈ 0.5 |
Landau's constant |
Ω
|
≈ 0.56714 32904 09783 87299 99686 62210 35554 |
Omega constant |
λ , μ
|
≈ 0.62432 99885 43550 87099 29363 83100 83724 |
Golomb–Dickman constant |
|
≈ 0.64341 05462 |
Cahen's constant |
C2
|
≈ 0.66016 18158 46869 57392 78121 10014 55577 |
Twin prime constant |
|
≈ 0.66274 34193 49181 58097 47420 97109 25290 |
Laplace limit |
β
|
≈ 0.70258 |
Embree–Trefethen constant |
K
|
≈ 0.76422 36535 89220 66299 06987 31250 09232 |
Landau–Ramanujan constant |
|
≈ 0.80939 40205 |
Alladi–Grinstead constant |
B4
|
≈ 0.87058 838 |
Brun's constant for prime quadruplets |
K
|
≈ 0.91596 55941 77219 01505 46035 14932 38411 |
Catalan's constant |
B´L
|
= 1 |
Legendre's constant |
Λ
|
≈ 1.09868 58055 |
Lengyel's constant |
K
|
≈ 1.13198 824 |
Viswanath's constant |
ζ
|
≈ 1.20205 69031 59594 28539 97381 61511 44999 |
Apéry's constant |
λ
|
≈ 1.30357 72690 34296 39125 70991 12152 55189 |
Conway's constant |
θ
|
≈ 1.30637 78838 63080 69046 86144 92602 60571 |
Mills' constant |
ρ
|
≈ 1.32471 79572 44746 02596 09088 54478 09734 |
Plastic constant |
μ
|
≈ 1.45136 92348 83381 05028 39684 85892 02744 |
Ramanujan–Soldner constant |
|
≈ 1.45607 49485 82689 67139 95953 51116 54356 |
Backhouse's constant |
|
≈ 1.46707 80794 |
Porter's constant |
|
≈ 1.53960 07178 |
Lieb's square ice constant |
EB
|
≈ 1.60669 51524 15291 76378 33015 23190 92458 |
Erdos–Borwein constant |
|
≈ 1.70521 11401 05367 76428 85514 53434 50816 |
Niven's constant |
B2
|
≈ 1.90216 05831 04 |
Brun's constant for twin primes |
P2
|
≈ 2.29558 71493 92638 07403 42980 49189 49039 |
Universal parabolic constant |
α
|
≈ 2.50290 78750 95892 82228 39028 73218 21578 |
Feigenbaum constant |
K
|
≈ 2.58498 17595 79253 21706 58935 87383 17116 |
Sierpinski's constant |
|
≈ 2.68545 20010 65306 44530 97148 35481 79569 |
Khinchin's constant |
F
|
≈ 2.80777 02420 28519 36522 15011 86557 77293 |
Fransén–Robinson constant |
|
≈ 3.27582 29187 21811 15978 76818 82453 84386 |
Lévy's constant |
ψ
|
≈ 3.35988 56662 43177 55317 20113 02918 92717 |
Reciprocal Fibonacci constant |
δ
|
≈ 4.66920 16091 02990 67185 32038 20466 20161 |
Feigenbaum constant |