Problem Analysis #1

Claude Opus 4.8 · Run 1

Correct
3.56s
468 toks

API · no tools. This is the prompt and response recorded for this attempt; a full solution may not have been returned.

Problem Statement

Return a single integer only. The problem has been revised so that no final answer is an irrational number, a parameterized expression, a range, a proof, a drawing, a graph, a locus equation, or a region description.

Let nn be the smallest natural number such that 5n>1095^n>10^9, and let mm be the smallest natural number such that 5m+4m>1095^m+4^m>10^9. Find n+mn+m.

Ground Truth
26
Recorded model response / solution
Reasoning Process

5^n > 10^9.

log10(5) ≈ 0.69897. Need n·0.69897 > 9, n > 12.876. So n = 13.

Check: 5^13 = 1220703125 > 10^9. 5^12 = 244140625 < 10^9. Yes n=13.

m: 5^m + 4^m > 10^9. Since 5^13 already exceeds, check smaller m.

5^12 = 244140625, 4^12 = 16777216. Sum = 260917841 < 10^9.

5^13 + 4^13 way over. So m = 13.

Wait check m=12 sum < 10^9, m=13 sum huge. So m=13.

n+m = 26.

\boxed{26}

Final Model Output
26

Comparative Analysis (P1) (Average across runs)

Averages use reported measurements only. Missing usage is not treated as zero.

Avg Time Taken

K-EXAONE-236B-A23B
48.3
DeepSeek V4 Pro
12.1
Gemini 3.5 Flash
10.6
Solar Pro 3
7.3
GPT-5.5
6.8
Claude Opus 4.8
3.3
KT Mi:dm 2.0 Base Instruct
1.7

Avg Token Usage

K-EXAONE-236B-A23B
7598.7
Gemini 3.5 Flash
2446.3
Solar Pro 3
1316.0
KT Mi:dm 2.0 Base Instruct
1259.0
DeepSeek V4 Pro
1017.0
GPT-5.5
424.7
Claude Opus 4.8
410.3
    Tokyo · Problem 1 · Claude Opus 4.8 | EntropyMath