// Magma code for working with number field 42.0.1236405605609949863710440275882328463150065157474288679507165498832965910232619214817863.1.
// Some of these functions may take a long time to execute (this depends on the field).


// Define the number field: 
R<x> := PolynomialRing(Rationals()); K<a> := NumberField(x^42 + 6*x^40 - 4*x^39 - 207*x^38 - 72*x^37 - 857*x^36 + 225*x^35 + 13524*x^34 + 4498*x^33 + 47646*x^32 - 1779*x^31 - 319728*x^30 + 56511*x^29 - 873558*x^28 + 1268358*x^27 + 3182931*x^26 - 287550*x^25 + 12585242*x^24 - 25238916*x^23 + 37767705*x^22 + 35532417*x^21 + 14671665*x^20 + 387146580*x^19 - 33604015*x^18 + 83426931*x^17 + 893018691*x^16 - 978644267*x^15 + 2536898589*x^14 + 320653281*x^13 + 1627927205*x^12 + 1198131426*x^11 - 1595121042*x^10 - 2227675498*x^9 - 1701355491*x^8 - 2415610293*x^7 - 905477771*x^6 + 53305794*x^5 + 1490523864*x^4 + 2070850257*x^3 + 1799361396*x^2 + 662562267*x + 198529417);

// Defining polynomial: 
DefiningPolynomial(K);

// Degree over Q: 
Degree(K);

// Signature: 
Signature(K);

// Discriminant: 
OK := Integers(K); Discriminant(OK);

// Ramified primes: 
PrimeDivisors(Discriminant(OK));

// Automorphisms: 
Automorphisms(K);

// Integral basis: 
IntegralBasis(K);

// Class group: 
ClassGroup(K);

// Narrow class group: 
NarrowClassGroup(K);

// Unit group: 
UK, fUK := UnitGroup(K);

// Unit rank: 
UnitRank(K);

// Generator for roots of unity: 
K!f(TU.1) where TU,f is TorsionUnitGroup(K);

// Fundamental units: 
[K|fUK(g): g in Generators(UK)];

// Regulator: 
Regulator(K);

// Analytic class number formula: 
/* self-contained Magma code snippet to compute the analytic class number formula */
Qx<x> := PolynomialRing(Rationals()); K<a> := NumberField(x^42 + 6*x^40 - 4*x^39 - 207*x^38 - 72*x^37 - 857*x^36 + 225*x^35 + 13524*x^34 + 4498*x^33 + 47646*x^32 - 1779*x^31 - 319728*x^30 + 56511*x^29 - 873558*x^28 + 1268358*x^27 + 3182931*x^26 - 287550*x^25 + 12585242*x^24 - 25238916*x^23 + 37767705*x^22 + 35532417*x^21 + 14671665*x^20 + 387146580*x^19 - 33604015*x^18 + 83426931*x^17 + 893018691*x^16 - 978644267*x^15 + 2536898589*x^14 + 320653281*x^13 + 1627927205*x^12 + 1198131426*x^11 - 1595121042*x^10 - 2227675498*x^9 - 1701355491*x^8 - 2415610293*x^7 - 905477771*x^6 + 53305794*x^5 + 1490523864*x^4 + 2070850257*x^3 + 1799361396*x^2 + 662562267*x + 198529417);
OK := Integers(K); DK := Discriminant(OK);
UK, fUK := UnitGroup(OK); clK, fclK := ClassGroup(OK);
r1,r2 := Signature(K); RK := Regulator(K); RR := Parent(RK);
hK := #clK; wK := #TorsionSubgroup(UK);
2^r1 * (2*Pi(RR))^r2 * RK * hK / (wK * Sqrt(RR!Abs(DK)));

// Intermediate fields: 
L := Subfields(K); L[2..#L];

// Galois group: 
G = GaloisGroup(K);

// Frobenius cycle types: 
// to obtain a list of [e_i,f_i] for the factorization of the ideal pO_K for p=7 in Magma:
p := 7; [<pr[2], Valuation(Norm(pr[1]), p)> : pr in Factorization(p*Integers(K))];