Title Names Value Apery's Constant apery zeta(3) Archimede's Constant (pi) π / pi 3.1415927 (approximate) Catalan's Constant catalan 0.91596559 (approximate) Euler's Constant γ / euler 0.57721566 (approximate) Pythagora's Constant (sqrt 2) pythagoras sqrt(2) The Base of Natural Logarithms (e) e 2.7182818 (approximate) The Golden Ratio golden / φ (1+sqrt(5))/2 Title Names Value Billion billion 1E9 Centillion centillion 1E303 Decillion decillion 1E33 Duodecillion duodecillion 1E39 Googol googol 10^100 Googolplex googolplex 10^(10^100) Hundred hundred 1E2 Million million 1E6 Nonillion nonillion 1E30 Novemdecillion novemdecillion 1E60 Octillion octillion 1E27 Octodecillion octodecillion 1E57 Quadrillion quadrillion 1E15 Quattuordecillion quattuordecillion 1E45 Quindecillion quindecillion 1E48 Quintillion quintillion 1E18 Septendecillion septendecillion 1E54 Septillion septillion 1E24 Sexdecillion sexdecillion 1E51 Sextillion sextillion 1E21 Thousand thousand 1E3 Tredecillion tredecillion 1E42 Trillion trillion 1E12 Undecillion undecillion 1E36 Vigintillion vigintillion 1E63 Title Names Value Alpha Particle Mass alpha_particle_mass / m_α 6.6446565E-24*g (approximate) Bohr Radius bohr_radius / a_o 0.5291772108E-10*m (approximate) Classical Electron Radius classical_electron_radius / r_e 2.817940325E-15*m (approximate) Compton Wavelength compton_wavelength / λ_C 2.426310238E-12*m (approximate) Electron Mass electron_mass / m_e 9.1093826E-28*g (approximate) Helion Mass helion_mass / m_h 5.00641214E-24*g (approximate) Neutron Mass neutron_mass / m_n 1.67492728E-24*g (approximate) Proton Mass proton_mass / m_p 1.67262171E-24*g (approximate) Rydberg Constant rydberg / R_∞ 10973731.568525*m^(-1) (approximate) Tau Mass tau_mass / m_τ 3.16777E-24*g (approximate) Title Names Value Borh Magneton bohr_magneton / μ_B 927.400949E-26*J*T^(-1) (approximate) Conductance Quantum conductance_quantum / G_0 7.748091733E-5*S (approximate) Elementary Charge elementary_charge / e_charge 1.60217653E-19*C (approximate) Josephson Constant josephson / K_J 483597.879E9*Hz*V^(-1) (approximate) Magnetic Flux Quantum magnetic_flux_quantum / Φ_0 2.06783372E-15*Wb (approximate) Nuclear Magneton nuclear_magneton / μ_N 5.05078343E-27*J*T^(-1) (approximate) von Klitzing Constant klitzing / R_K 25812.807449*ohm (approximate) Title Names Value Atomic Mass Constant atomic_mass / m_u 1.66053886E-24*g (approximate) Avogadro Constant avogadro / N_A 6.0221415E23*mol^(-1) (approximate) Boltzmann Constant boltzmann 1.3806505E-23*J*K^(-1) (approximate) Faraday Constant faraday 96485.3383*C*mol^(-1) (approximate) First Radiation Constant first_radiation / c_1 3.74177138E-16*W*m^2 (approximate) Ideal Gas Constant ideal_gas 8.314472*J*K^(-1)*mol^(-1) (approximate) Second Radiation Constant second_radiation / c_2 1.4387752E-2*m*K (approximate) Title Names Value Characteristic Impedance of Vacuum characteristic_impedance / Z_0 4E-7*pi*299792458*ohm Electric Constant (Permittivity of Free Space) electric_constant / ε_0 1/(4E-7*pi*299792458^2)*F*m^(-1) Magnetic Constant (Permeability of Free Space) magnetic_constant / μ_0 4E-7*pi*N*A^(-2) Newtonian Constant of Gravitation newtonian_constant / G 6.6742E-11*m^3*kg^(-1)*s^(-2) (approximate) Planck Constant planck 6.6260693E-34*J*s (approximate) Planck Constant over 2 pi planck2pi planck/(2*pi) Planck Length planck_length / l_P 1.61624E-35*m (approximate) Planck Mass planck_mass / m_P 2.17645E-5*g (approximate) Planck Temperature planck_temperature / T_P 1.41679E32*K (approximate) Planck Time planck_time / t_P 5.39121E-44*s (approximate) Speed of Light in Vacuum c / speed_of_light 299792458*m*s^(-1) Title Names Value Per Mille permille / ‰ 1/1000 Per Myriad permyriad / ‱ 1/10000 Procent % / procent 1/100 Title Names Value False false / no 0 Imaginary i (sqrt -1) i i Infinity infinity infinity Negative Infinity minus_infinity -(+infinity) Positive Infinity plus_infinity (+infinity) True true / yes 1 Undefined undefined undefined Title Names Value Answer 2 ans2 a previous result Answer 3 ans3 a previous result Answer 4 ans4 a previous result Answer 5 ans5 a previous result Last Answer ans / answer / ans1 a previous result Title Names Value x x default assumptions y y default assumptions z z default assumptions