An application of thep-adic class number formula

[1] Apostol T.(1950)Generalized Dedekind sums and transformation formulae of certain Lambert series Duke Math. J. 17 147-157

[2] Jakubec S.(1993)On divisibility of class number of real abelian fields of prime conductor Abh. Math. Sem. Univ. Hamburg 63 67-86

[3] Jakubec S.(1994)On the divisibility of Rocky Mountain J. Math. 24 1467-1473

[4] Jakubec S.(1994) by the prime 3 Math. Slovaca 44 651-661

[5] Jakubec S.(1995)On divisibility of Acta Arith. 71 55-64

[6] Jakubec S.(1996) by the prime 5 Abh. Math. Sem. Univ. Hamburg 66 151-158

[7] Leopoldt H.-W.(1959)Connection between the Wieferich congruence and divisibility of Abh. Math. Sem. Univ. Hamburg 23 36-47

[8] Leopoldt H.-W.(1960)Connection between congruences Rend. Circ. Mat. Palermo 9 39-50

[9] Leopoldt H.-W.(1962) ≡ 1 (mod J. Reine Angew. Math. 209 54-71

[10] Leopoldt H.-W.(1975)) and divisibility of J. Reine Angew. Math. 274/275 224-239

[1] Apostol T.(1950)Generalized Dedekind sums and transformation formulae of certain Lambert series Duke Math. J. 17 147-157

[2] Jakubec S.(1993)On divisibility of class number of real abelian fields of prime conductor Abh. Math. Sem. Univ. Hamburg 63 67-86

[3] Jakubec S.(1994)On the divisibility of Rocky Mountain J. Math. 24 1467-1473

[4] Jakubec S.(1994) by the prime 3 Math. Slovaca 44 651-661

[5] Jakubec S.(1995)On divisibility of Acta Arith. 71 55-64

[6] Jakubec S.(1996) by the prime 5 Abh. Math. Sem. Univ. Hamburg 66 151-158

[7] Leopoldt H.-W.(1959)Connection between the Wieferich congruence and divisibility of Abh. Math. Sem. Univ. Hamburg 23 36-47

[8] Leopoldt H.-W.(1960)Connection between congruences Rend. Circ. Mat. Palermo 9 39-50

[9] Leopoldt H.-W.(1962) ≡ 1 (mod J. Reine Angew. Math. 209 54-71

[10] Leopoldt H.-W.(1975)) and divisibility of J. Reine Angew. Math. 274/275 224-239