Maths Olympiad Prep

Track / Stage 4 / 35 of 340 #295 of 1964

Problem 295

AMC 12 late, AIME early
Number theory Difficulty 4.6 Find the answer

Among the numbers 2019,2021,20232019, 2021, 2023, the number of prime numbers is \qquad .

A number or a short expression. Fractions can be typed as 3/2, and spacing doesn't matter.

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Official solution

Answer: 1

Source: NuminaMath-1.5, licensed Apache-2.0. Statement reproduced verbatim; metadata (topic, difficulty, ordering) added by this project.