# Properties

 Label 6.2.aj_bp_aev_lb_auk_bfk Base Field $\F_{2}$ Dimension $6$ Ordinary No $p$-rank $4$ Principally polarizable Yes Contains a Jacobian No

## Invariants

 Base field: $\F_{2}$ Dimension: $6$ L-polynomial: $( 1 - 2 x + 2 x^{2} )^{2}( 1 - 5 x + 13 x^{2} - 25 x^{3} + 39 x^{4} - 50 x^{5} + 52 x^{6} - 40 x^{7} + 16 x^{8} )$ Frobenius angles: $\pm0.00978468837242$, $\pm0.190215311628$, $\pm0.250000000000$, $\pm0.250000000000$, $\pm0.409784688372$, $\pm0.609784688372$ Angle rank: $1$ (numerical)

This isogeny class is not simple.

## Newton polygon $p$-rank: $4$ Slopes: $[0, 0, 0, 0, 1/2, 1/2, 1/2, 1/2, 1, 1, 1, 1]$

## Point counts

This isogeny class is principally polarizable, but does not contain a Jacobian.

 $r$ 1 2 3 4 5 6 7 8 9 10 $A(\F_{q^r})$ 1 6025 319579 27263125 1562146576 59689367725 3270294268459 231928085953125 13227039568113631 907310352806560000

 $r$ 1 2 3 4 5 6 7 8 9 10 $C(\F_{q^r})$ -6 6 12 26 49 54 92 210 354 781

## Decomposition and endomorphism algebra

Endomorphism algebra over $\F_{2}$
 The isogeny class factors as 1.2.ac 2 $\times$ 4.2.af_n_az_bn and its endomorphism algebra is a direct product of the endomorphism algebras for each isotypic factor. The endomorphism algebra for each factor is: 1.2.ac 2 : $\mathrm{M}_{2}($$$\Q(\sqrt{-1})$$$)$ 4.2.af_n_az_bn : $$\Q(\zeta_{15})$$.
Endomorphism algebra over $\overline{\F}_{2}$
 The base change of $A$ to $\F_{2^{20}}$ is 1.1048576.acmj 4 $\times$ 1.1048576.dau 2 . The endomorphism algebra for each factor is: 1.1048576.acmj 4 : $\mathrm{M}_{4}($$$\Q(\sqrt{-15})$$$)$ 1.1048576.dau 2 : $\mathrm{M}_{2}(B)$, where $B$ is the quaternion algebra over $$\Q$$ ramified at $2$ and $\infty$.
All geometric endomorphisms are defined over $\F_{2^{20}}$.
Remainder of endomorphism lattice by field
• Endomorphism algebra over $\F_{2^{2}}$  The base change of $A$ to $\F_{2^{2}}$ is 1.4.a 2 $\times$ 4.4.b_ad_ah_f. The endomorphism algebra for each factor is: 1.4.a 2 : $\mathrm{M}_{2}($$$\Q(\sqrt{-1})$$$)$ 4.4.b_ad_ah_f : $$\Q(\zeta_{15})$$.
• Endomorphism algebra over $\F_{2^{4}}$  The base change of $A$ to $\F_{2^{4}}$ is 1.16.i 2 $\times$ 4.16.ah_bh_aep_lt. The endomorphism algebra for each factor is: 1.16.i 2 : $\mathrm{M}_{2}(B)$, where $B$ is the quaternion algebra over $$\Q$$ ramified at $2$ and $\infty$. 4.16.ah_bh_aep_lt : $$\Q(\zeta_{15})$$.
• Endomorphism algebra over $\F_{2^{5}}$  The base change of $A$ to $\F_{2^{5}}$ is 1.32.i 2 $\times$ 2.32.a_acj 2 . The endomorphism algebra for each factor is: 1.32.i 2 : $\mathrm{M}_{2}($$$\Q(\sqrt{-1})$$$)$ 2.32.a_acj 2 : $\mathrm{M}_{2}($$$\Q(\sqrt{-3}, \sqrt{5})$$$)$
• Endomorphism algebra over $\F_{2^{10}}$  The base change of $A$ to $\F_{2^{10}}$ is 1.1024.acj 4 $\times$ 1.1024.a 2 . The endomorphism algebra for each factor is: 1.1024.acj 4 : $\mathrm{M}_{4}($$$\Q(\sqrt{-15})$$$)$ 1.1024.a 2 : $\mathrm{M}_{2}($$$\Q(\sqrt{-1})$$$)$

## Base change

This is a primitive isogeny class.

## Twists

Below are some of the twists of this isogeny class.
 Twist Extension Degree Common base change 6.2.af_n_az_br_acs_ea $2$ (not in LMFDB) 6.2.ab_b_af_h_ak_q $2$ (not in LMFDB) 6.2.b_b_f_h_k_q $2$ (not in LMFDB) 6.2.f_n_z_br_cs_ea $2$ (not in LMFDB) 6.2.j_bp_ev_lb_uk_bfk $2$ (not in LMFDB) 6.2.ad_f_af_ab_k_as $3$ (not in LMFDB) 6.2.ad_i_ao_bd_abs_cu $3$ (not in LMFDB) 6.2.a_ae_b_l_ac_ay $3$ (not in LMFDB) 6.2.d_i_q_bd_bu_co $3$ (not in LMFDB) 6.2.g_o_n_ah_abm_aco $3$ (not in LMFDB)
Below is a list of all twists of this isogeny class.
 Twist Extension Degree Common base change 6.2.af_n_az_br_acs_ea $2$ (not in LMFDB) 6.2.ab_b_af_h_ak_q $2$ (not in LMFDB) 6.2.b_b_f_h_k_q $2$ (not in LMFDB) 6.2.f_n_z_br_cs_ea $2$ (not in LMFDB) 6.2.j_bp_ev_lb_uk_bfk $2$ (not in LMFDB) 6.2.ad_f_af_ab_k_as $3$ (not in LMFDB) 6.2.ad_i_ao_bd_abs_cu $3$ (not in LMFDB) 6.2.a_ae_b_l_ac_ay $3$ (not in LMFDB) 6.2.d_i_q_bd_bu_co $3$ (not in LMFDB) 6.2.g_o_n_ah_abm_aco $3$ (not in LMFDB) 6.2.ae_g_a_ad_au_ce $5$ (not in LMFDB) 6.2.b_b_f_h_k_q $5$ (not in LMFDB) 6.2.ai_bc_abx_t_ec_ajo $6$ (not in LMFDB) 6.2.ah_z_acn_fj_ajq_os $6$ (not in LMFDB) 6.2.ag_o_an_ah_bm_aco $6$ (not in LMFDB) 6.2.af_q_abi_cj_ado_fg $6$ (not in LMFDB) 6.2.ae_e_h_ar_ac_bg $6$ (not in LMFDB) 6.2.ad_i_aq_bd_abu_co $6$ (not in LMFDB) 6.2.ac_ac_l_al_ao_bu $6$ (not in LMFDB) 6.2.ab_e_ai_n_aw_bi $6$ (not in LMFDB) 6.2.ab_e_ac_n_ai_bg $6$ (not in LMFDB) 6.2.a_ae_ab_l_c_ay $6$ (not in LMFDB) 6.2.b_e_c_n_i_bg $6$ (not in LMFDB) 6.2.b_e_i_n_w_bi $6$ (not in LMFDB) 6.2.c_ac_al_al_o_bu $6$ (not in LMFDB) 6.2.d_f_f_ab_ak_as $6$ (not in LMFDB) 6.2.d_i_o_bd_bs_cu $6$ (not in LMFDB) 6.2.e_e_ah_ar_c_bg $6$ (not in LMFDB) 6.2.f_q_bi_cj_do_fg $6$ (not in LMFDB) 6.2.h_z_cn_fj_jq_os $6$ (not in LMFDB) 6.2.i_bc_bx_t_aec_ajo $6$ (not in LMFDB) 6.2.ah_bb_acx_gj_alo_rs $8$ (not in LMFDB) 6.2.af_j_af_aj_be_aca $8$ (not in LMFDB) 6.2.af_r_abt_dr_ago_ka $8$ (not in LMFDB) 6.2.ad_h_ap_z_abo_ci $8$ (not in LMFDB) 6.2.d_h_p_z_bo_ci $8$ (not in LMFDB) 6.2.f_j_f_aj_abe_aca $8$ (not in LMFDB) 6.2.f_r_bt_dr_go_ka $8$ (not in LMFDB) 6.2.h_bb_cx_gj_lo_rs $8$ (not in LMFDB) 6.2.a_ac_a_n_a_aq $10$ (not in LMFDB) 6.2.e_g_a_ad_u_ce $10$ (not in LMFDB) 6.2.ak_bz_ags_qz_abho_cay $15$ (not in LMFDB) 6.2.ai_bc_abx_t_ec_ajo $15$ (not in LMFDB) 6.2.ah_y_abz_cx_adi_ea $15$ (not in LMFDB) 6.2.af_q_abi_cj_ado_fg $15$ (not in LMFDB) 6.2.ae_j_am_d_w_abu $15$ (not in LMFDB) 6.2.ae_j_am_j_e_aq $15$ (not in LMFDB) 6.2.ac_ac_l_al_ao_bu $15$ (not in LMFDB) 6.2.ab_a_d_ad_ac_o $15$ (not in LMFDB) 6.2.ab_a_d_d_ac_i $15$ (not in LMFDB) 6.2.b_e_i_n_w_bi $15$ (not in LMFDB) 6.2.c_a_a_j_k_c $15$ (not in LMFDB) 6.2.c_d_g_d_ac_c $15$ (not in LMFDB) 6.2.c_d_g_j_q_bg $15$ (not in LMFDB) 6.2.f_m_v_bh_bu_ck $15$ (not in LMFDB) 6.2.h_z_cn_fj_jq_os $15$ (not in LMFDB) 6.2.i_bh_ds_il_pq_yc $15$ (not in LMFDB) 6.2.ae_i_ai_l_abc_ce $20$ (not in LMFDB) 6.2.ae_k_aq_bd_aca_dk $20$ (not in LMFDB) 6.2.a_a_a_l_a_a $20$ (not in LMFDB) 6.2.a_c_a_n_a_q $20$ (not in LMFDB) 6.2.e_i_i_l_bc_ce $20$ (not in LMFDB) 6.2.e_k_q_bd_ca_dk $20$ (not in LMFDB) 6.2.ag_q_av_b_ca_aee $24$ (not in LMFDB) 6.2.af_l_ap_r_au_ba $24$ (not in LMFDB) 6.2.af_p_abj_cr_aeq_ha $24$ (not in LMFDB) 6.2.ae_a_x_abh_abe_em $24$ (not in LMFDB) 6.2.ae_c_p_az_aq_cw $24$ (not in LMFDB) 6.2.ae_g_ab_aj_m_ak $24$ (not in LMFDB) 6.2.ae_i_aj_ab_ba_aca $24$ (not in LMFDB) 6.2.ad_k_as_bl_aby_dg $24$ (not in LMFDB) 6.2.ac_a_d_ad_a_e $24$ (not in LMFDB) 6.2.ab_a_c_ad_a_ae $24$ (not in LMFDB) 6.2.ab_c_a_f_ae_o $24$ (not in LMFDB) 6.2.ab_g_ag_v_as_ca $24$ (not in LMFDB) 6.2.ab_g_ae_v_am_by $24$ (not in LMFDB) 6.2.ab_i_ag_bd_aq_cq $24$ (not in LMFDB) 6.2.b_a_ac_ad_a_ae $24$ (not in LMFDB) 6.2.b_c_a_f_e_o $24$ (not in LMFDB) 6.2.b_g_e_v_m_by $24$ (not in LMFDB) 6.2.b_g_g_v_s_ca $24$ (not in LMFDB) 6.2.b_i_g_bd_q_cq $24$ (not in LMFDB) 6.2.c_a_ad_ad_a_e $24$ (not in LMFDB) 6.2.d_k_s_bl_by_dg $24$ (not in LMFDB) 6.2.e_a_ax_abh_be_em $24$ (not in LMFDB) 6.2.e_c_ap_az_q_cw $24$ (not in LMFDB) 6.2.e_g_b_aj_am_ak $24$ (not in LMFDB) 6.2.e_i_j_ab_aba_aca $24$ (not in LMFDB) 6.2.f_l_p_r_u_ba $24$ (not in LMFDB) 6.2.f_p_bj_cr_eq_ha $24$ (not in LMFDB) 6.2.g_q_v_b_aca_aee $24$ (not in LMFDB) 6.2.ai_bh_ads_il_apq_yc $30$ (not in LMFDB) 6.2.ag_t_abq_cv_aee_fw $30$ (not in LMFDB) 6.2.af_m_av_bh_abu_ck $30$ (not in LMFDB) 6.2.ad_e_ad_h_as_bg $30$ (not in LMFDB) 6.2.ac_a_a_j_ak_c $30$ (not in LMFDB) 6.2.ac_d_ag_d_c_c $30$ (not in LMFDB) 6.2.ac_d_ag_j_aq_bg $30$ (not in LMFDB) 6.2.a_b_a_b_a_i $30$ (not in LMFDB) 6.2.b_a_ad_ad_c_o $30$ (not in LMFDB) 6.2.b_a_ad_d_c_i $30$ (not in LMFDB) 6.2.d_e_d_h_s_bg $30$ (not in LMFDB) 6.2.e_j_m_d_aw_abu $30$ (not in LMFDB) 6.2.e_j_m_j_ae_aq $30$ (not in LMFDB) 6.2.g_t_bq_cv_ee_fw $30$ (not in LMFDB) 6.2.h_y_bz_cx_di_ea $30$ (not in LMFDB) 6.2.k_bz_gs_qz_bho_cay $30$ (not in LMFDB) 6.2.ae_i_ai_ad_bc_ace $40$ (not in LMFDB) 6.2.ac_c_a_f_ak_u $40$ (not in LMFDB) 6.2.ac_e_ae_ad_o_abc $40$ (not in LMFDB) 6.2.ac_e_ae_l_ao_bc $40$ (not in LMFDB) 6.2.ac_g_ai_v_aba_ca $40$ (not in LMFDB) 6.2.a_ag_a_v_a_aca $40$ (not in LMFDB) 6.2.a_ae_a_ad_a_bc $40$ (not in LMFDB) 6.2.a_ae_a_l_a_abc $40$ (not in LMFDB) 6.2.a_ac_a_f_a_au $40$ (not in LMFDB) 6.2.a_a_a_ad_a_a $40$ (not in LMFDB) 6.2.a_c_a_f_a_u $40$ (not in LMFDB) 6.2.a_e_a_ad_a_abc $40$ (not in LMFDB) 6.2.a_e_a_l_a_bc $40$ (not in LMFDB) 6.2.a_g_a_v_a_ca $40$ (not in LMFDB) 6.2.c_c_a_f_k_u $40$ (not in LMFDB) 6.2.c_e_e_ad_ao_abc $40$ (not in LMFDB) 6.2.c_e_e_l_o_bc $40$ (not in LMFDB) 6.2.c_g_i_v_ba_ca $40$ (not in LMFDB) 6.2.e_i_i_ad_abc_ace $40$ (not in LMFDB) 6.2.ah_ba_acn_ev_ahu_lk $60$ (not in LMFDB) 6.2.af_o_abf_ch_adu_fq $60$ (not in LMFDB) 6.2.ae_h_ae_ah_u_abg $60$ (not in LMFDB) 6.2.ad_g_aj_r_abe_bw $60$ (not in LMFDB) 6.2.ac_b_ac_ab_k_ao $60$ (not in LMFDB) 6.2.ac_c_ae_l_ao_o $60$ (not in LMFDB) 6.2.ac_e_ai_r_aba_bi $60$ (not in LMFDB) 6.2.ab_c_b_ab_c_c $60$ (not in LMFDB) 6.2.ab_c_b_f_c_i $60$ (not in LMFDB) 6.2.a_ab_a_b_a_ai $60$ (not in LMFDB) 6.2.b_c_ab_ab_ac_c $60$ (not in LMFDB) 6.2.b_c_ab_f_ac_i $60$ (not in LMFDB) 6.2.c_b_c_ab_ak_ao $60$ (not in LMFDB) 6.2.c_c_e_l_o_o $60$ (not in LMFDB) 6.2.c_e_i_r_ba_bi $60$ (not in LMFDB) 6.2.d_g_j_r_be_bw $60$ (not in LMFDB) 6.2.e_h_e_ah_au_abg $60$ (not in LMFDB) 6.2.f_o_bf_ch_du_fq $60$ (not in LMFDB) 6.2.h_ba_cn_ev_hu_lk $60$ (not in LMFDB) 6.2.ai_bj_aee_jx_asw_bdk $120$ (not in LMFDB) 6.2.ag_p_as_ad_ci_aeu $120$ (not in LMFDB) 6.2.ag_r_abe_bj_ay_o $120$ (not in LMFDB) 6.2.ag_v_acc_eh_ahk_le $120$ (not in LMFDB) 6.2.ag_x_aco_ft_akq_qm $120$ (not in LMFDB) 6.2.af_o_abb_bp_aca_cq $120$ (not in LMFDB) 6.2.af_q_abl_ct_aem_gq $120$ (not in LMFDB) 6.2.ae_l_ay_bp_ack_do $120$ (not in LMFDB) 6.2.ad_a_j_aj_ag_u $120$ (not in LMFDB) 6.2.ad_c_d_ah_g_ae $120$ (not in LMFDB) 6.2.ad_c_d_ab_am_ba $120$ (not in LMFDB) 6.2.ad_e_ad_f_am_w $120$ (not in LMFDB) 6.2.ad_g_aj_p_ay_bm $120$ (not in LMFDB) 6.2.ad_i_ap_x_abe_bs $120$ (not in LMFDB) 6.2.ad_i_ap_bd_abw_cw $120$ (not in LMFDB) 6.2.ad_k_av_bp_aco_dw $120$ (not in LMFDB) 6.2.ac_c_ae_ad_o_ao $120$ (not in LMFDB) 6.2.ac_d_ac_ad_k_au $120$ (not in LMFDB) 6.2.ac_f_ag_f_c_ae $120$ (not in LMFDB) 6.2.ab_c_ad_f_ai_u $120$ (not in LMFDB) 6.2.ab_e_af_l_aq_bc $120$ (not in LMFDB) 6.2.a_af_a_f_a_e $120$ (not in LMFDB) 6.2.a_ae_a_r_a_abi $120$ (not in LMFDB) 6.2.a_ad_a_ad_a_u $120$ (not in LMFDB) 6.2.a_ad_a_d_a_ac $120$ (not in LMFDB) 6.2.a_ac_a_ad_a_o $120$ (not in LMFDB) 6.2.a_ac_a_l_a_ao $120$ (not in LMFDB) 6.2.a_ab_a_ab_a_o $120$ (not in LMFDB) 6.2.a_a_a_j_a_ac $120$ (not in LMFDB) 6.2.a_a_a_j_a_c $120$ (not in LMFDB) 6.2.a_b_a_ab_a_ao $120$ (not in LMFDB) 6.2.a_c_a_ad_a_ao $120$ (not in LMFDB) 6.2.a_c_a_l_a_o $120$ (not in LMFDB) 6.2.a_d_a_ad_a_au $120$ (not in LMFDB) 6.2.a_d_a_d_a_c $120$ (not in LMFDB) 6.2.a_e_a_r_a_bi $120$ (not in LMFDB) 6.2.a_f_a_f_a_ae $120$ (not in LMFDB) 6.2.b_c_d_f_i_u $120$ (not in LMFDB) 6.2.b_e_f_l_q_bc $120$ (not in LMFDB) 6.2.c_c_e_ad_ao_ao $120$ (not in LMFDB) 6.2.c_d_c_ad_ak_au $120$ (not in LMFDB) 6.2.c_f_g_f_ac_ae $120$ (not in LMFDB) 6.2.d_a_aj_aj_g_u $120$ (not in LMFDB) 6.2.d_c_ad_ah_ag_ae $120$ (not in LMFDB) 6.2.d_c_ad_ab_m_ba $120$ (not in LMFDB) 6.2.d_e_d_f_m_w $120$ (not in LMFDB) 6.2.d_g_j_p_y_bm $120$ (not in LMFDB) 6.2.d_i_p_x_be_bs $120$ (not in LMFDB) 6.2.d_i_p_bd_bw_cw $120$ (not in LMFDB) 6.2.d_k_v_bp_co_dw $120$ (not in LMFDB) 6.2.e_l_y_bp_ck_do $120$ (not in LMFDB) 6.2.f_o_bb_bp_ca_cq $120$ (not in LMFDB) 6.2.f_q_bl_ct_em_gq $120$ (not in LMFDB) 6.2.g_p_s_ad_aci_aeu $120$ (not in LMFDB) 6.2.g_r_be_bj_y_o $120$ (not in LMFDB) 6.2.g_v_cc_eh_hk_le $120$ (not in LMFDB) 6.2.g_x_co_ft_kq_qm $120$ (not in LMFDB) 6.2.i_bj_ee_jx_sw_bdk $120$ (not in LMFDB)