Every Day Counts
Mersenne Prime Exponent Days
 
Age: 19,929 days
Date of birth
Your 24th Mersenne Prime Exponent Day is on
Tuesday
when you will be
19,937 days old

These are primes p such that 2p - 1 is prime.

For Mersenne Prime Days see Mersenne Prime Days.

Remind me, please


Next Prime Events
Day Age
Event
Days Ahead
Year Age
27 Jan 2026
19,937
8
54
27 Jan 2026
19,937
8
54
27 Jan 2026
19,937
8
54
22 Mar 2026
19,991
62
54
11 Apr 2026
20,011
82
54
18 Oct 2026
20,201
272
55
23 Mar 2027
20,357
428
55
11 Dec 2032
22,447
2,518
61
12 Dec 2049
28,657
8,728
78
09 Apr 2079
39,367
19,438
107
11 Mar 2091
43,721
23,792
119
08 Aug 2104
48,619
28,690
133
03 Dec 2150
65,537
45,608
179
16 Jan 2246
100,279
80,350
274
05 Aug 2269
108,881
88,952
298
08 May 2330
131,071
111,142
358
29 Aug 7788
2,124,679
2,104,750
5817
Ordinal
Day Age
Date
Age
1st
2
30 Jun 1971
0
2nd
3
01 Jul 1971
0
3rd
5
03 Jul 1971
0
4th
7
05 Jul 1971
0
5th
13
11 Jul 1971
0
6th
17
15 Jul 1971
0
7th
19
17 Jul 1971
0
8th
31
29 Jul 1971
0
9th
61
28 Aug 1971
0
10th
89
25 Sep 1971
0
11th
107
13 Oct 1971
0
12th
127
02 Nov 1971
0
13th
521
30 Nov 1972
1
14th
607
24 Feb 1973
1
15th
1,279
28 Dec 1974
3
16th
2,203
09 Jul 1977
6
17th
2,281
25 Sep 1977
6
18th
3,217
18 Apr 1980
8
19th
4,253
18 Feb 1983
11
20th
4,423
07 Aug 1983
12
21st
9,689
06 Jan 1998
26
22nd
9,941
15 Sep 1998
27
23rd
11,213
10 Mar 2002
30
24th
19,937
27 Jan 2026
54
1
25th
21,701
26 Nov 2030
59
26th
23,209
12 Jan 2035
63
27th
44,497
25 Apr 2093
121
28th
86,243
13 Aug 2207
236