λ
Sequence Observatory

5,621,779

5621779
Deficient Odd Prime

Starting at 5,621,779, the Collatz iteration reaches 1 after 108 steps. The first transition is 16865338; the starting value is odd with 2 positive divisors.

Prime Factor Structure

Factorization String 5621779
Distinct Prime Factors 1
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 2
Divisor Sum (σ) 5,621,780
Proper Divisor Sum 1
Digit Sum / Digital Root 37 (Root: 1)
Adjacent Primes #5621771 ← → #5621809

Radix Representation

Decimal 5621779
Binary 10101011100100000010011 (23 bits)
Octal 0o25344023
Hexadecimal 0x55C813

Divisor Catalog (2)

1 5,621,779

Collatz Trajectory (108 steps to reach 1)

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

5,621,779 16,865,338 8,432,669 25,298,008 12,649,004 6,324,502 3,162,251 9,486,754 4,743,377 14,230,132 7,115,066 3,557,533 10,672,600 5,336,300 2,668,150 1,334,075 4,002,226 2,001,113 6,003,340 3,001,670 1,500,835 4,502,506 2,251,253 6,753,760 3,376,880 1,688,440 844,220 422,110 211,055 633,166 316,583 949,750 474,875 1,424,626 712,313 2,136,940 1,068,470 534,235 1,602,706 801,353 2,404,060 1,202,030 601,015 1,803,046 901,523 2,704,570 1,352,285 4,056,856 2,028,428 1,014,214 507,107 1,521,322 760,661 2,281,984 1,140,992 570,496 285,248 142,624 71,312 35,656

More profiles

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