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Four-Digit Prime Numbers by Tens (Part 2: 2000-3000)
You will be given four four-digit numbers that differ only by the last digit being 1, 3, 7, or 9. Answer which ones are prime numbers.
Example: If you are given "21, 23, 27, 29", only 23 and 29 are prime numbers, so you should choose "3, 9"
Example: If you are given "21, 23, 27, 29", only 23 and 29 are prime numbers, so you should choose "3, 9"
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Last updated: March 28, 2025
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| First submitted | March 28, 2025 |
| Times taken | 47 |
| Average score | 86.0% | Report this quiz | Report |
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2101, 2103, 2107, 2109
2241, 2243, 2247, 2249
2121, 2123, 2127, 2129
2611, 2613, 2617, 2619
2771, 2773, 2777, 2779
2181, 2183, 2187, 2189
2001, 2003, 2007, 2009
2431, 2433, 2437, 2439
2471, 2473, 2477, 2479
2981, 2983, 2987, 2989
2501, 2503, 2507, 2509
2561, 2563, 2567, 2569
2031, 2033, 2037, 2039
2581, 2583, 2587, 2589
2401, 2403, 2407, 2409
2971, 2973, 2977, 2979
2171, 2173, 2177, 2179
2601, 2603, 2607, 2609
2531, 2533, 2537, 2539
2961, 2963, 2967, 2969
2851, 2853, 2857, 2859
2221, 2223, 2227, 2229
2451, 2453, 2457, 2459
2131, 2133, 2137, 2139
2211, 2213, 2217, 2219
2491, 2493, 2497, 2499
2461, 2463, 2467, 2469
2071, 2073, 2077, 2079
2711, 2713, 2717, 2719
2931, 2933, 2937, 2939
2941, 2943, 2947, 2949
2111, 2113, 2117, 2119
2681, 2683, 2687, 2689
2951, 2953, 2957, 2959
2651, 2653, 2657, 2659
2191, 2193, 2197, 2199
2091, 2093, 2097, 2099
2821, 2823, 2827, 2829
2721, 2723, 2727, 2729
2341, 2343, 2347, 2349
2861, 2863, 2867, 2869
2741, 2743, 2747, 2749
2231, 2233, 2237, 2239
2441, 2443, 2447, 2449
2831, 2833, 2837, 2839
2781, 2783, 2787, 2789
2061, 2063, 2067, 2069
2901, 2903, 2907, 2909
2141, 2143, 2147, 2149
2671, 2673, 2677, 2679
2621, 2623, 2627, 2629
2481, 2483, 2487, 2489
2881, 2883, 2887, 2889
2261, 2263, 2267, 2269
2791, 2793, 2797, 2799
2541, 2543, 2547, 2549
2391, 2393, 2397, 2399
2411, 2413, 2417, 2419
2551, 2553, 2557, 2559
2281, 2283, 2287, 2289
2991, 2993, 2997, 2999
2291, 2293, 2297, 2299
2361, 2363, 2367, 2369
2631, 2633, 2637, 2639
2011, 2013, 2017, 2019
2521, 2523, 2527, 2529
2151, 2153, 2157, 2159
2271, 2273, 2277, 2279
2571, 2573, 2577, 2579
2591, 2593, 2597, 2599
2421, 2423, 2427, 2429
2641, 2643, 2647, 2649
2921, 2923, 2927, 2929
2321, 2323, 2327, 2329
2331, 2333, 2337, 2339
2371, 2373, 2377, 2379
2201, 2203, 2207, 2209
2811, 2813, 2817, 2819
2661, 2663, 2667, 2669
2021, 2023, 2027, 2029
2841, 2843, 2847, 2849
2511, 2513, 2517, 2519
2871, 2873, 2877, 2879
2311, 2313, 2317, 2319
2701, 2703, 2707, 2709
2041, 2043, 2047, 2049
2081, 2083, 2087, 2089
2381, 2383, 2387, 2389
2161, 2163, 2167, 2169
2351, 2353, 2357, 2359
2751, 2753, 2757, 2759
2251, 2253, 2257, 2259
2761, 2763, 2767, 2769
2051, 2053, 2057, 2059
2691, 2693, 2697, 2699
2891, 2893, 2897, 2899
2301, 2303, 2307, 2309
2731, 2733, 2737, 2739
2911, 2913, 2917, 2919
2801, 2803, 2807, 2809
0none
11
13
17
19
21, 3
21, 7
21, 9
23, 7
23, 9
27, 9
31, 3, 7
31, 3, 9
31, 7, 9
33, 7, 9
4all
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