Every Day Counts
Carol Prime Days
 
Age: 22,198 days
Date of birth

These are primes which are also Carol numbers.

Carol numbers are of the form (2n - 1)2 - 2

Carol numbers were first studied by Cletus Emmanuel, who named them after a friend, Carol G. Kirnon.

The sixth Carol prime is 1,046,527 so it's unlikely you'll ever have more than 5 Carol Prime Days. After that they go very big.

Remind me, please


Next Prime Events
Day Age
Event
Days Ahead
Year Age
06 Jul 2026
22,229
31
60
22 Sep 2026
22,307
109
61
09 Feb 2027
22,447
249
61
12 Mar 2029
23,209
1,011
63
23 Apr 2029
23,251
1,053
63
23 Apr 2031
23,981
1,783
65
10 Feb 2044
28,657
6,459
78
26 Jan 2048
30,103
7,905
82
01 Jul 2067
37,199
15,001
101
07 Jun 2073
39,367
17,169
107
09 May 2085
43,721
21,523
119
06 Oct 2098
48,619
26,421
133
31 Jan 2145
65,537
43,339
179
16 Mar 2240
100,279
78,081
274
04 Oct 2263
108,881
86,683
298
06 Jul 2324
131,071
108,873
358
28 Oct 7782
2,124,679
2,102,481
5817
Ordinal
Day Age
Date
Age
1st
7
02 Sep 1965
0
2nd
47
12 Oct 1965
0
3rd
223
06 Apr 1966
0
4th
3,967
06 Jul 1976
10
5th
16,127
21 Oct 2009
44