diff --git a/lmfdb/app.py b/lmfdb/app.py
index a2c3cb531a..073616e0b3 100644
--- a/lmfdb/app.py
+++ b/lmfdb/app.py
@@ -308,32 +308,6 @@ def netloc_redirect():
         return redirect(urlunparse(replaced), code=302)
 
 
-@cached_function
-def bad_bots_list():
-    return [
-        elt.lower()
-        for elt in [
-            "The Knowledge AI",
-            "Wolfram",
-            "petalbot",
-            "Bytespider",
-            "Sogou",
-            "MJ12bot",
-            "Amazonbot",
-            "meta",
-            "facebook",
-        ]
-    ]
-
-
-@app.before_request
-def badbot():
-    ua = request.user_agent.string.lower()
-    for elt in bad_bots_list():
-        if elt in ua:
-            return render_template("404.html", title='Too many requests'), 429
-
-
 def timestamp():
     return '[%s UTC]' % time.strftime("%Y-%m-%d %H:%M:%S", time.gmtime())
 
diff --git a/lmfdb/elliptic_curves/code.yaml b/lmfdb/elliptic_curves/code.yaml
index 271b725ee7..820de91731 100644
--- a/lmfdb/elliptic_curves/code.yaml
+++ b/lmfdb/elliptic_curves/code.yaml
@@ -35,7 +35,7 @@ curve:
   sage:  E = EllipticCurve({ainvs})
   pari:  E = ellinit({ainvs})
   magma: E := EllipticCurve({ainvs});
-  oscar: E = EllipticCurve({ainvs})
+  oscar: E = elliptic_curve({ainvs})
 
 simple_curve:
   sage: E.short_weierstrass_model()
diff --git a/lmfdb/groups/abstract/templates/abstract-show-subgroup.html b/lmfdb/groups/abstract/templates/abstract-show-subgroup.html
index e5642609f6..99341f2033 100644
--- a/lmfdb/groups/abstract/templates/abstract-show-subgroup.html
+++ b/lmfdb/groups/abstract/templates/abstract-show-subgroup.html
@@ -13,11 +13,11 @@ <h2> Subgroup ($H$) information</h2>
     {% else %}
     <tr><td>{{KNOWL('group.name', title='Description:')}}</td><td>not computed</td></tr>
     {% endif %}
-    <tr><td>{{KNOWL('group.order',title='Order:')}}</td><td> {{info.pos_int_and_factor(seq.subgroup_order)}} </td></tr>
-    <tr><td>{{KNOWL('group.subgroup.index',title='Index:')}}</td><td> {{info.pos_int_and_factor(seq.quotient_order)}} </td></tr>
+    <tr><td>{{KNOWL('group.order',title='Order:')}}</td><td> {{info.pos_int_and_factor(seq.subgroup_order) | safe}} </td></tr>
+    <tr><td>{{KNOWL('group.subgroup.index',title='Index:')}}</td><td> {{info.pos_int_and_factor(seq.quotient_order) | safe}} </td></tr>
     <tr><td>{{KNOWL('group.exponent',title='Exponent:')}}</td><td>
     {% if seq.sub.exponent  %}
-        {{info.pos_int_and_factor(seq.sub.exponent)}} 
+        {{info.pos_int_and_factor(seq.sub.exponent) | safe}}
     {% else %}
         not computed
     {% endif %}
@@ -31,7 +31,7 @@ <h2> Subgroup ($H$) information</h2>
     class:')}}</td>
 	  <td>
 	  {% if seq.sub.G %}
-	  ${{seq.sub.nilpotency_class}}$  
+	  ${{seq.sub.nilpotency_class}}$
 	  {% else %}
 	  not computed
 	  {% endif %}
@@ -45,7 +45,7 @@ <h2> Subgroup ($H$) information</h2>
 	  not computed
 	  {% endif %}
 	</td></tr>
-	
+
   </table>
 </p>
 
@@ -68,8 +68,8 @@ <h2> {{KNOWL('group.ambient', 'Ambient group ($G$) information')}} </h2>
   <table>
     <tr><td>{{KNOWL('group.name', title='Description:')}}</td>
     <td><a href="{{url_for('.by_label', label=seq.ambient)}}">${{seq.ambient_tex}}$</a></td></tr>
-    <tr><td>{{KNOWL('group.order',title='Order:')}}</td><td> {{info.pos_int_and_factor(seq.ambient_order)}} </td></tr>
-    <tr><td>{{KNOWL('group.exponent',title='Exponent:')}}</td><td> {{info.pos_int_and_factor(seq.amb.exponent)}} </td></tr>
+    <tr><td>{{KNOWL('group.order',title='Order:')}}</td><td> {{info.pos_int_and_factor(seq.ambient_order) | safe}} </td></tr>
+    <tr><td>{{KNOWL('group.exponent',title='Exponent:')}}</td><td> {{info.pos_int_and_factor(seq.amb.exponent) | safe}} </td></tr>
 {# Bug in generator Magma code, so hiding for now
     <tr>
       <td>{% if seq.amb.solvable %}{{KNOWL('group.presentation', 'Presentation:')}}{% else %}{{KNOWL('group.permutation_gens', 'Generators:')}}{% endif %}</td>
@@ -95,10 +95,10 @@ <h2> Quotient group ($Q$) structure </h2>
   <table>
   {% if seq.quotient is not none %}    <tr><td>{{KNOWL('group.name', title='Description:')}}</td>
       <td><a href="{{url_for('.by_label', label=seq.quotient)}}">${{seq.quotient_tex}}$</a></td></tr> {% endif %}
-    <tr><td>{{KNOWL('group.order',title='Order:')}}</td><td> {{info.pos_int_and_factor(seq.quotient_order)}} </td></tr>
-    <tr><td>{{KNOWL('group.exponent',title='Exponent:')}}</td><td> 
+    <tr><td>{{KNOWL('group.order',title='Order:')}}</td><td> {{info.pos_int_and_factor(seq.quotient_order) | safe}} </td></tr>
+    <tr><td>{{KNOWL('group.exponent',title='Exponent:')}}</td><td>
     {% if seq.quo|attr('exponent')  %}
-      {{info.pos_int_and_factor(seq.quo.exponent)}} 
+      {{info.pos_int_and_factor(seq.quo.exponent) | safe}}
     {% else %}
       not computed
     {% endif %}
@@ -169,17 +169,17 @@ <h2> Automorphism information </h2>
     {% endif %}
       </td></tr>
     {% if seq.aut_weyl_group is not none %}
-      <tr><td>$\operatorname{res}({{S}})$</td><td><a href="{{url_for('.by_label', label=seq.aut_weyl_group)}}">${{seq.aut_weyl.tex_name}}$</a>, of order {{info.pos_int_and_factor(seq.aut_weyl.order)}}</td></tr>
+      <tr><td>$\operatorname{res}({{S}})$</td><td><a href="{{url_for('.by_label', label=seq.aut_weyl_group)}}">${{seq.aut_weyl.tex_name}}$</a>, of order {{info.pos_int_and_factor(seq.aut_weyl.order) | safe}}</td></tr>
     {% elif seq.aut_weyl_index is not none %}
-      <tr><td>$\card{\operatorname{res}({{S}})}$</td><td>{{info.pos_int_and_factor(seq.amb.aut_order/seq.aut_weyl_index)}}</td></tr>
+      <tr><td>$\card{\operatorname{res}({{S}})}$</td><td>{{info.pos_int_and_factor(seq.amb.aut_order/seq.aut_weyl_index) | safe}}</td></tr>
     {% endif %}
     {% if seq.aut_centralizer_order is not none %}
-    <tr><td>$\card{\operatorname{ker}(\operatorname{res})}$</td><td>{{info.pos_int_and_factor(seq.aut_centralizer_order)}}</td></tr>
+    <tr><td>$\card{\operatorname{ker}(\operatorname{res})}$</td><td>{{info.pos_int_and_factor(seq.aut_centralizer_order) | safe}}</td></tr>
     {% endif %}
     {% if seq.weyl_group is not none %}
-      <tr><td>$W$</td><td><a href="{{url_for('.by_label', label=seq.weyl_group)}}">${{seq.weyl.tex_name}}$</a>, of order {{info.pos_int_and_factor(seq.weyl.order)}}</td></tr>
+      <tr><td>$W$</td><td><a href="{{url_for('.by_label', label=seq.weyl_group)}}">${{seq.weyl.tex_name}}$</a>, of order {{info.pos_int_and_factor(seq.weyl.order) | safe}}</td></tr>
     {% elif seq.normalizer is not none and seq.centralizer is not none %}
-    <tr><td>$\card{W}$</td><td>{{info.pos_int_and_factor(seq.normalizer_.subgroup_order / seq.centralizer_.subgroup_order)}}</td></tr>
+    <tr><td>$\card{W}$</td><td>{{info.pos_int_and_factor(seq.normalizer_.subgroup_order / seq.centralizer_.subgroup_order) | safe}}</td></tr>
     {% else %}
     <tr><td>$\card{W}$</td><td> not computed</td></tr>
     {% endif %}
diff --git a/lmfdb/number_fields/code.yaml b/lmfdb/number_fields/code.yaml
index b803a3dccd..e2457c2107 100644
--- a/lmfdb/number_fields/code.yaml
+++ b/lmfdb/number_fields/code.yaml
@@ -24,7 +24,7 @@ field:
   sage: x = polygen(QQ);  K.<a> = NumberField(%s)
   pari: K = bnfinit(%s, 1)
   magma: R<x> := PolynomialRing(Rationals()); K<a> := NumberField(%s);
-  oscar: Qx, x = PolynomialRing(QQ); K, a = NumberField(%s)
+  oscar: Qx, x = polynomial_ring(QQ); K, a = number_field(%s)
 
 poly:
   sage:  K.defining_polynomial()
diff --git a/lmfdb/number_fields/number_field.py b/lmfdb/number_fields/number_field.py
index 6a1ca786ad..be0db630cb 100644
--- a/lmfdb/number_fields/number_field.py
+++ b/lmfdb/number_fields/number_field.py
@@ -777,7 +777,7 @@ def interesting():
     'gp' : '',
     'magma' : 'R<x> := PolynomialRing(Rationals());',
     'mathematica' : '',
-    'oscar' : 'Rx, x = PolynomialRing(QQ)',
+    'oscar' : 'Rx, x = polynomial_ring(QQ)',
     'sage' : 'x = polygen(QQ)',
 }
 
@@ -785,7 +785,7 @@ def interesting():
     'gp' : '', # don't try to make fields in gp, even with nfinit it may take a very long time
     'magma' : 'function make_data() return [NumberField(r[2]) : r in data]; end function;',
     'mathematica' : '',
-    'oscar' : 'function make_data() return [NumberField(r[2]) for r in data] end',
+    'oscar' : 'function make_data() return [number_field(r[2]) for r in data] end',
     'sage' : 'def make_data(): return [NumberField(r[1],"a") for r in data]',
 }
 download_makedata_comment = {
diff --git a/lmfdb/static/robots.txt b/lmfdb/static/robots.txt
index 02388e3480..758026bc36 100644
--- a/lmfdb/static/robots.txt
+++ b/lmfdb/static/robots.txt
@@ -1,5 +1,5 @@
 User-agent: *
-Crawl-delay: 15
+Crawl-delay: 30
 Disallow: /static/
 Disallow: /api/
 
diff --git a/lmfdb/templates/base.html b/lmfdb/templates/base.html
index 9d87727d56..5484f4a9ae 100644
--- a/lmfdb/templates/base.html
+++ b/lmfdb/templates/base.html
@@ -25,6 +25,8 @@
           href="https://ajax.googleapis.com/ajax/libs/jqueryui/1.12.1/themes/smoothness/jquery-ui.css"
           integrity="sha384-Nlo8b0yiGl7Dn+BgLn4mxhIIBU6We7aeeiulNCjHdUv/eKHx59s3anfSUjExbDxn"
           crossorigin="anonymous">
+    <!--reCAPTCHA-->
+    <script src="https://www.google.com/recaptcha/enterprise.js?render=6LchHWwpAAAAACFe52hZNEkUP5Bn5_0FfLiEuF3i&waf=session" async defer></script>
 
 
 
diff --git a/lmfdb/templates/style.css b/lmfdb/templates/style.css
index 6fc1772d9f..6714ab3893 100644
--- a/lmfdb/templates/style.css
+++ b/lmfdb/templates/style.css
@@ -2630,3 +2630,8 @@ span.raw-tset-container:hover > span.raw-tset-copy-btn {
 div.upload_section {
   margin-bottom: 60px;
 }
+
+/* hidge google badge */
+.grecaptcha-badge {
+    visibility: hidden;
+}