Every Day Counts
Mersenne Prime Exponent Days
 
Age: 19,945 days
Date of birth
Your 25th Mersenne Prime Exponent Day is on
Friday
when you will be
21,701 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
08 May 2024
19,949
4
54
19 Jun 2024
19,991
46
54
09 Jul 2024
20,011
66
54
15 Jan 2025
20,201
256
55
20 Jun 2025
20,357
412
55
23 Feb 2029
21,701
1,756
59
11 Mar 2031
22,447
2,502
61
11 Mar 2048
28,657
8,712
78
31 Jul 2071
37,199
17,254
101
07 Jul 2077
39,367
19,422
107
08 Jun 2089
43,721
23,776
119
06 Nov 2102
48,619
28,674
133
02 Mar 2149
65,537
45,592
179
15 Apr 2244
100,279
80,334
274
03 Nov 2267
108,881
88,936
298
05 Aug 2328
131,071
111,126
358
27 Nov 7786
2,124,679
2,104,734
5817
Ordinal
Day Age
Date
Age
1st
2
27 Sep 1969
0
2nd
3
28 Sep 1969
0
3rd
5
30 Sep 1969
0
4th
7
02 Oct 1969
0
5th
13
08 Oct 1969
0
6th
17
12 Oct 1969
0
7th
19
14 Oct 1969
0
8th
31
26 Oct 1969
0
9th
61
25 Nov 1969
0
10th
89
23 Dec 1969
0
11th
107
10 Jan 1970
0
12th
127
30 Jan 1970
0
13th
521
28 Feb 1971
1
14th
607
25 May 1971
1
15th
1,279
27 Mar 1973
3
16th
2,203
07 Oct 1975
6
17th
2,281
24 Dec 1975
6
18th
3,217
17 Jul 1978
8
19th
4,253
18 May 1981
11
20th
4,423
04 Nov 1981
12
21st
9,689
05 Apr 1996
26
22nd
9,941
13 Dec 1996
27
23rd
11,213
07 Jun 2000
30
24th
19,937
26 Apr 2024
54
25th
21,701
23 Feb 2029
59
1
26th
23,209
11 Apr 2033
63
27th
44,497
24 Jul 2091
121
28th
86,243
10 Nov 2205
236