24!20+1 trivially factors prime!: 97 (digits:2)
 26!20+1 trivially factors prime!: 157 (digits:3)
 36!20+1 trivially factors prime!: 577 (digits:3)
 46!20+1 trivially factors prime!: 7177 (digits:4)
 48!20+1 trivially factors prime!: 10753 (digits:5)
 56!20+1 trivially factors prime!: 32257 (digits:5)
 62!20+1 trivially factors prime!: 114577 (digits:6)
 64!20+1 trivially factors prime!: 270337 (digits:6)
 66!20+1 trivially factors prime!: 473617 (digits:6)
 72!20+1 trivially factors prime!: 1437697 (digits:7)
 74!20+1 trivially factors prime!: 1902097 (digits:7)
 78!20+1 trivially factors prime!: 3094417 (digits:7)
 90!20+1 trivially factors prime!: 94500001 (digits:8)

 Primality testing 116!20+1 [N-1, BLS]
 116!20+1 is prime! (0.000000 seconds) (digits:11)

 Primality testing 126!20+1 [N-1, BLS]
 126!20+1 is prime! (0.000000 seconds) (digits:12)

 Primality testing 166!20+1 [N-1, BLS]
 166!20+1 is prime! (0.010000 seconds) (digits:17)

 Primality testing 190!20+1 [N-1, BLS]
 190!20+1 is prime! (0.010000 seconds) (digits:19)

 Primality testing 228!20+1 [N-1, BLS]
 228!20+1 is prime! (0.010000 seconds) (digits:24)

 Primality testing 232!20+1 [N-1, BLS]
 232!20+1 is prime! (0.020000 seconds) (digits:24)

 Primality testing 234!20+1 [N-1, BLS]
 234!20+1 is prime! (0.010000 seconds) (digits:24)

 Primality testing 248!20+1 [N-1, BLS]
 248!20+1 is prime! (0.010000 seconds) (digits:26)

 Primality testing 288!20+1 [N-1, BLS]
 288!20+1 is prime! (0.020000 seconds) (digits:31)

 Primality testing 314!20+1 [N-1, BLS]
 314!20+1 is prime! (0.040000 seconds) (digits:34)

 Primality testing 326!20+1 [N-1, BLS]
 326!20+1 is prime! (0.030000 seconds) (digits:36)

 Primality testing 330!20+1 [N-1, BLS]
 330!20+1 is prime! (0.010000 seconds) (digits:36)

 Primality testing 336!20+1 [N-1, BLS]
 336!20+1 is prime! (0.020000 seconds) (digits:37)

 Primality testing 350!20+1 [N-1, BLS]
 350!20+1 is prime! (0.010000 seconds) (digits:39)

 Primality testing 392!20+1 [N-1, BLS]
 392!20+1 is prime! (0.020000 seconds) (digits:44)

 Primality testing 408!20+1 [N-1, BLS]
 408!20+1 is prime! (0.010000 seconds) (digits:46)

 Primality testing 420!20+1 [N-1, BLS]
 420!20+1 is prime! (0.021000 seconds) (digits:48)

 Primality testing 486!20+1 [N-1, BLS]
 486!20+1 is prime! (0.010000 seconds) (digits:57)

 Primality testing 516!20+1 [N-1, BLS]
 516!20+1 is prime! (0.020000 seconds) (digits:61)

 Primality testing 522!20+1 [N-1, BLS]
 522!20+1 is prime! (0.020000 seconds) (digits:61)

 Primality testing 576!20+1 [N-1, BLS]
 576!20+1 is prime! (0.010000 seconds) (digits:69)

 Primality testing 656!20+1 [N-1, BLS]
 656!20+1 is prime! (0.020000 seconds) (digits:80)

 Primality testing 674!20+1 [N-1, BLS]
 674!20+1 is prime! (0.020000 seconds) (digits:83)

 Primality testing 702!20+1 [N-1, BLS]
 702!20+1 is prime! (0.030000 seconds) (digits:87)

 Primality testing 898!20+1 [N-1, BLS]
 898!20+1 is prime! (0.040000 seconds) (digits:115)

 Primality testing 1116!20+1 [N-1, BLS]
 1116!20+1 is prime! (0.030000 seconds) (digits:148)

 Primality testing 1248!20+1 [N-1, BLS]
 1248!20+1 is prime! (0.030000 seconds) (digits:168)

 Primality testing 1278!20+1 [N-1, BLS]
 1278!20+1 is prime! (0.060000 seconds) (digits:173)

 Primality testing 1286!20+1 [N-1, BLS]
 1286!20+1 is prime! (0.060000 seconds) (digits:174)

 Primality testing 1356!20+1 [N-1, BLS]
 1356!20+1 is prime! (0.030000 seconds) (digits:185)

 Primality testing 1380!20+1 [N-1, BLS]
 1380!20+1 is prime! (0.110000 seconds) (digits:189)

 Primality testing 1602!20+1 [N-1, BLS]
 1602!20+1 is prime! (0.091000 seconds) (digits:224)

 Primality testing 1656!20+1 [N-1, BLS]
 1656!20+1 is prime! (0.050000 seconds) (digits:233)

 Primality testing 1706!20+1 [N-1, BLS]
 1706!20+1 is prime! (0.060000 seconds) (digits:241)

 Primality testing 1726!20+1 [N-1, BLS]
 1726!20+1 is prime! (0.100000 seconds) (digits:244)

 Primality testing 1776!20+1 [N-1, BLS]
 1776!20+1 is prime! (0.050000 seconds) (digits:252)

 Primality testing 2062!20+1 [N-1, BLS]
 2062!20+1 is prime! (0.130000 seconds) (digits:299)

 Primality testing 2722!20+1 [N-1, BLS]
 2722!20+1 is prime! (0.351000 seconds) (digits:411)

 Primality testing 3306!20+1 [N-1, BLS]
 3306!20+1 is prime! (0.190000 seconds) (digits:512)

 Primality testing 3416!20+1 [N-1, BLS]
 3416!20+1 is prime! (0.180000 seconds) (digits:532)

 Primality testing 4074!20+1 [N-1, BLS]
 4074!20+1 is prime! (0.541000 seconds) (digits:649)

 Primality testing 4166!20+1 [N-1, BLS]
 4166!20+1 is prime! (0.341000 seconds) (digits:666)

 Primality testing 5270!20+1 [N-1, BLS]
 5270!20+1 is prime! (1.291000 seconds) (digits:869)

 Primality testing 6034!20+1 [N-1, BLS]
 6034!20+1 is prime! (1.593000 seconds) (digits:1012)

 Primality testing 7038!20+1 [N-1, BLS]
 7038!20+1 is prime! (1.021000 seconds) (digits:1203)

 Primality testing 7184!20+1 [N-1, BLS]
 7184!20+1 is prime! (1.072000 seconds) (digits:1232)

 Primality testing 8846!20+1 [N-1, BLS]
 8846!20+1 is prime! (3.805000 seconds) (digits:1556)

 Primality testing 9024!20+1 [N-1, BLS]
 9024!20+1 is prime! (1.583000 seconds) (digits:1591)

 Primality testing 9670!20+1 [N-1, BLS]
 9670!20+1 is prime! (4.085000 seconds) (digits:1720)

 Primality testing 12338!20+1 [N-1, BLS]
 12338!20+1 is prime! (6.159000 seconds) (digits:2258)

 Primality testing 12876!20+1 [N-1, BLS]
 12876!20+1 is prime! (4.206000 seconds) (digits:2369)

 Primality testing 17582!20+1 [N-1, BLS]
 17582!20+1 is prime! (1.203000 seconds) (digits:3353)

 Primality testing 18440!20+1 [N-1, BLS]
 18440!20+1 is prime! (2.141000 seconds) (digits:3535)

 Primality testing 20700!20+1 [N-1, BLS]
 20700!20+1 is prime! (2.438000 seconds) (digits:4020)

 Primality testing 20850!20+1 [N-1, BLS]
 20850!20+1 is prime! (5.359000 seconds) (digits:4053)

 Primality testing 22306!20+1 [N-1, BLS]
 22306!20+1 is prime! (5.953000 seconds) (digits:4368)

 Primality testing 22466!20+1 [N-1, BLS]
 22466!20+1 is prime! (6.015000 seconds) (digits:4403)

 Primality testing 22634!20+1 [N-1, BLS]
 22634!20+1 is prime! (5.969000 seconds) (digits:4439)

 Primality testing 30146!20+1 [N-1, BLS]
 30146!20+1 is prime! (4.516000 seconds) (digits:6100)

 Primality testing 30744!20+1 [N-1, BLS]
 30744!20+1 is prime! (10.203000 seconds) (digits:6234)

 Primality testing 32136!20+1 [N-1, BLS]
 32136!20+1 is prime! (33.908000 seconds) (digits:6547)

 Primality testing 34048!20+1 [N-1, BLS]
 34048!20+1 is prime! (23.063000 seconds) (digits:6979)

 Primality testing 37058!20+1 [N-1, BLS]
 37058!20+1 is prime! (68.809000 seconds) (digits:7664)

 Primality testing 40696!20+1 [N-1, BLS]
 40696!20+1 is prime! (73.085000 seconds) (digits:8499)

 Primality testing 41812!20+1 [N-1, BLS]
 41812!20+1 is prime! (87.926000 seconds) (digits:8756)

 Primality testing 48608!20+1 [N-1, BLS]
 48608!20+1 is prime! (46.867000 seconds) (digits:10338) Ian Brown 05/2003

 Primality testing 49646!20+1 [N-1, BLS]
 49646!20+1 is prime! (119.992000 seconds) (digits:10582) Ian Brown 05/2003

 Primality testing 53456!20+1 [N-1, BLS]
 53456!20+1 is prime! (130.438000 seconds) (digits:11479) Ian Brown 05/2003

 Primality testing 58542!20+1 [N-1, BLS]
 58542!20+1 is prime! (60.988000 seconds) (digits:12686) Ian Brown 05/2003

 Primality testing 65714!20+1 [N-1, BLS]
 65714!20+1 is prime! (239.694000 seconds) (digits:14405) Ian Brown 05/2003

 Primality testing 67596!20+1 [N-1, BLS]
 67596!20+1 is prime! (99.884000 seconds) (digits:14859) Ian Brown 05/2003

 Primality testing 72338!20+1 [N-1, BLS]
 72338!20+1 is prime! (317.126000 seconds) (digits:16008) Ian Brown 05/2003

 Primality testing 74300!20+1 [N-1, BLS]
 74300!20+1 is prime! (195.661000 seconds) (digits:16485) Ian Brown 05/2003

 Primality testing 79956!20+1 [N-1, BLS]
 79956!20+1 is prime! (147.172000 seconds) (digits:17867) Ian Brown 05/2003

 Primality testing 83096!20+1 [N-1, BLS]
 83096!20+1 is prime! (162.614000 seconds) (digits:18638) Ian Brown 05/2003

 Primality testing 98436!20+1 [N-1, BLS]
 98436!20+1 is prime! (596.388000 seconds) (digits:22441) Ian Brown 05/2003

 Primality testing 100788!20+1 [N-1, BLS]
 100788!20+1 is prime! (260.014000 seconds) (digits:23029) Ian Brown 05/2003

 Primality testing 106782!20+1 [N-1, BLS]
 106782!20+1 is prime! (279.883000 seconds) (digits:24532) Ian Brown 05/2003

 Primality testing 110690!20+1 [N-1, BLS]
 110690!20+1 is prime! (458.820000 seconds) (digits:25516) Ian Brown 05/2003

 Primality testing 131624!20+1 [N-1, BLS]
 131624!20+1 is prime! (177.778000 seconds) (digits:30836) Ian Brown p90 07/2003

 Primality testing 162142!20+1 [N-1, BLS]
 162142!20+1 is prime! (209.594000 seconds) (digits:38719) Ken Davis p104 10/2003

 Primality testing 174168!20+1 [N-1, BLS]
 174168!20+1 is prime! (367.0521s+0.0650s) (digits:41862) Ken Davis p104 11/2003

 Primality testing 175516!20+1 [N-1, BLS]
 175516!20+1 is prime! (264.3196s+0.0530s) (digits:42215) Ken Davis p104 11/2003
 
 Primality testing 208938!20+1 [N-1, BLS]  
 Running N-1 test using base 5  
 Running N-1 test using base 11621  
 208938!20+1 is prime! (292.8566s+0.1641s) (digits:51044) MO 06/2013

 Primality testing 209730!20+1 [N-1, BLS]  
 Running N-1 test using base 21017  
 Running N-1 test using base 21019  
 209730!20+1 is prime! (345.9509s+0.1635s) (digits:51255) MO 06/2013

 Primality testing 235280!20+1 [N-1, BLS]  
 Running N-1 test using base 11783  
 Running N-1 test using base 11801  
 235280!20+1 is prime! (427.2422s+0.1698s) (digits:58085) MO 06/2013

 Primality testing 282440!20+1 [N-1, BLS]
 282440!20+1 is prime! (2167.0054s+0.1576s) (digits:70848) Masataka Oita p176 06/2005

 Primality testing 284842!20+1 [N-1, BLS]
 284842!20+1 is prime! (2298.8017s+0.1589s) (digits:71503) Masataka Oita p176 06/2005

 Primality testing 290700!20+1 [N-1, BLS]
 290700!20+1 is prime! (2236.8126s+0.1732s) (digits:73102) Masataka Oita p176 10/2005

 Primality testing 354722!20+1 [N-1, BLS]  
 Running N-1 test using base 5  
 Running N-1 test using base 19709  
 354722!20+1 is prime! (974.6854s+0.3285s) (digits:90734) MO 08/2013

 Primality testing 421892!20+1 [N-1, BLS]
 Running N-1 test using base 26387
 421892!20+1 is prime! (173.3714s+0.0660s)(digits:109504) MO 06/2021

 Primality testing 447394!20+1 [N-1, BLS]
 Running N-1 test using base 5
 Running N-1 test using base 24923
 447394!20+1 is prime! (385.8690s+0.0403s)(digits:116693) MO 06/2021

 Primality testing 486418!20+1 [N-1, BLS]
 Running N-1 test using base 27031
 Running N-1 test using base 27061
 486418!20+1 is prime! (529.0122s+0.0805s)(digits:127754) MO 06/2021

 Primality testing 559914!20+1 [N-1, BLS]
 Running N-1 test using base 5
 Running N-1 test using base 31153
 Running N-1 test using base 31183
 Running N-1 test using base 31333
 559914!20+1 is prime! (1341.7870s+0.0982s)(digits:148768) MO 06/2021

 Primality testing 662952!20+1 [N-1, BLS]
 Running N-1 test using base 5
 662952!20+1 is prime! (362.1539s+0.1215s)(digits:178576) MO 06/2021

 Primality testing 704568!20+1 [N-1, BLS]
 Running N-1 test using base 44123
 704568!20+1 is prime! (596.0695s+0.1097s)(digits:190717) MO 06/2021

 Primality testing 715978!20+1 [N-1, BLS]
 Running N-1 test using base 5
 Running N-1 test using base 39791
 Running N-1 test using base 39841
 715978!20+1 is prime! (1675.8263s+0.1274s)(digits:194055) MO 06/2021