Problem Analysis #0

Gemini-3-Pro-Preview · Run 2

71.22s
9,508 toks
Problem Statement

Let X be the group generated by uu and vv, such that

X=⟨u,v∣u46=1,v40,488,236=1,vu=uv27,636,633⟩X=\langle u, v \mid u^{46} = 1, v^{40,488,236} = 1, vu = uv^{27,636,633} \rangle

.

What is the order of the group X?

Ground Truth
184
Execution Trace
Reasoning Process

[THOUGHT] The group XX is defined by the presentation ⟨u,v∣u46=1,v40,488,236=1,vu=uv27,636,633⟩\langle u, v \mid u^{46} = 1, v^{40,488,236} = 1, vu = uv^{27,636,633} \rangle. This is a semidirect product structure. Let m=46m = 46, n=40,488,236n = 40,488,236, k=27,636,633k = 27,636,633. The relation vu=uvkvu = uv^k is equivalent to u−1vu=vku^{-1}vu = v^k. This implies that conjugation by uu raises vv to the power kk. For consistency with um=1u^m = 1, we must have vkm=vv^{k^m} = v, so vkm−1=1v^{k^m - 1} = 1. Combined with vn=1v^n = 1, the order of vv must divide N=gcd⁡(n,km−1)N = \gcd(n, k^m - 1). Since NN divides km−1k^m - 1, we have km≡1(modN)k^m \equiv 1 \pmod N, so gcd⁡(k,N)=1\gcd(k, N) = 1. Thus the map x↦xkx \mapsto x^k is an automorphism of the cyclic group CNC_N. We can construct the semidirect product CN⋊CmC_N \rtimes C_m which satisfies all the relations. The order of the group is m×Nm \times N. I will compute N=gcd⁡(n,km−1)N = \gcd(n, k^m - 1) and then the total order. [/THOUGHT] [PYTHON] import math

m = 46 n = 40488236 k = 27636633

Calculate k^m mod n to find the remainder

We need gcd(n, k^m - 1).

Property: gcd(n, A) = gcd(n, A % n)

So gcd(n, k^m - 1) = gcd(n, (k^m - 1) % n)

Let rem = k^m % n. Then we need gcd(n, rem - 1).

If rem - 1 is negative (i.e. rem = 0), it handles correctly as gcd(n, -1) = 1.

But pow(k, m, n) returns result in [0, n-1].

rem = pow(k, m, n) val = rem - 1 N = math.gcd(n, val)

order = m * N print(f"{m=}") print(f"{n=}") print(f"{k=}") print(f"{rem=}") print(f"{N=}") print(f"{order=}") [/PYTHON]

Tool Output
[PYTHON OUTPUT] m=46 n=40488236 k=27636633 rem=22177545 N=4 order=184 [/PYTHON OUTPUT]
Reasoning Process

The group XX is defined by the presentation X=⟨u,v∣u46=1,vn=1,u−1vu=vk⟩X = \langle u, v \mid u^{46} = 1, v^{n} = 1, u^{-1}vu = v^k \rangle, where n=40,488,236n = 40,488,236 and k=27,636,633k = 27,636,633. This is a metacyclic group. The relation u−1vu=vku^{-1}vu = v^k implies u−mvum=vkmu^{-m}vu^m = v^{k^m}. Since u46=1u^{46} = 1, we must have v=vk46v = v^{k^{46}}, which implies vk46−1=1v^{k^{46}-1} = 1. Thus, the order of the generator vv must divide both nn and k46−1k^{46}-1. The maximal possible order for vv is N=gcd⁡(n,k46−1)N = \gcd(n, k^{46}-1). The group XX is a semidirect product CN⋊C46C_N \rtimes C_{46}, and its order is given by 46×N46 \times N.

Using the Python code, we calculated: N=gcd⁡(40,488,236,27,636,63346−1)=4N = \gcd(40,488,236, 27,636,633^{46} - 1) = 4.

Thus, the order of the group XX is: ∣X∣=46×4=184|X| = 46 \times 4 = 184.

184\boxed{184}

Final Model Output
184

Comparative Analysis (P0) (Average across runs)

Avg Time Taken

Solar-Open-100B
927.7
K-EXAONE-236B-A23B
261.4
Kanana-2-30B-Thinking
94.3
GLM-4.5-Air
89.6
Gemini-3-Pro-Preview
83.6
Kanana-2-30B-Thinking-2601
73.2
Solar-Pro 2
63.9
GPT-5.2 (high)
44.4
HCX-007
31.0
EXAONE-4.0-32B
3.8

Avg Token Usage

Solar-Open-100B
49,491
K-EXAONE-236B-A23B
19,786
Kanana-2-30B-Thinking-2601
16,432
Kanana-2-30B-Thinking
13,798
Solar-Pro 2
13,080
Gemini-3-Pro-Preview
11,034
GLM-4.5-Air
9,584
GPT-5.2 (high)
4,266
HCX-007
4,078
EXAONE-4.0-32B
3,114