https://en.wikipedia.org/wiki/Mersenne_prime ---------------------------------------------
31 Mesenne Prime exponents n = 4k +1
19 Mesenne Prime exponents n = 4k +3
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Chance of discrepancy ~ 1 in 9
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31 Mesenne Prime exponents n = 4k +1
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1 5 = 1^2 + 2^2
2 13 = 2^2 + 3^2
3 17 = 1^2 + 4^2
4 61 = 5^2 + 6^2
5 89 = 5^2 + 8^2
6 521 = 11^2 + 20^2
7 2281 = 16^2 + 45^2
8 3217 = 9^2 + 56^2
9 4253 = 38^2 + 53^2
10 9689 = 35^2 + 92^2
11 9941 = 70^2 + 71^2
12 11213 = 67^2 + 82^2
13 19937 = 76^2 + 119^2
14 21701 = 26^2 + 145^2
15 23209 = 40^2 + 147^2
16 44497 = 64^2 + 201^2
17 132049 = 120^2 + 343^2
18 859433 = 187^2 + 908^2
19 1398269 = 610^2 + 1,013^2
20 2976221 = 1,189^2 + 1,250^2
21 3021377 = 244^2 + 1,721^2
22 6972593 = 352^2 + 2,617^2
23 13466917 = 2,241^2 + 2,906^2
24 30402457 = 3,291^2 + 4,424^2
25 32582657 = 3,536^2 + 4,481^2
26 42643801 = 285^2 + 6,524^2
27 43112609 = 3,880^2 + 5,297^2
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28? 57885161 = 2,444^2 + 7,205^2
29? 74207281 = 2,716^2 + 8,175^2
30? 77232917 = 2,329^2 + 8,474^2
31? 82589933 = 5,122^2 + 7,507^2
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19 Mesenne Prime exponents n = 4k +3
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0 2
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1 3 : 7
2 7 : 3 x 5
3 19 : 3 x 13
4 31 : 3 x 3 x 7
5 107 : 5 x 43
6 127 : 3 x 5 x 17
7 607 : 3 x 3 x 3 x 3 x 3 x 5
8 1279 : 3 x 853
9 2203 : 3 x 13 x 113
10 4423 : 3 x 3 x 983
11 86243 : 7 x 41 x 601
12 110503 : 3 x 23 x 3203
13 216091 : 3 x 144061
14 756839 : 41 x 36919
15 1257787 : 3 x 5 x 5 x 17 x 1973
16 20996011 : 3 x 17 x 823373
17 24036583 : 3 x 3 x 5341463
18 25964951 : 41 x 1266583
19 37156667 : 5 x 2693 x 5519
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Art Neuendorffer
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