λ
Sequence Observatory

2,841,221

293 × 9697
Deficient Odd Composite

Starting at 2,841,221, the Collatz iteration reaches 1 after 99 steps. The first transition is 8523664; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 293 × 9697
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 4
Divisor Sum (σ) 2,851,212
Proper Divisor Sum 9,991
Digit Sum / Digital Root 20 (Root: 2)
Adjacent Primes #2841211 ← → #2841283

Radix Representation

Decimal 2841221
Binary 1010110101101010000101 (22 bits)
Octal 0o12655205
Hexadecimal 0x2B5A85

Divisor Catalog (4)

1 293 9,697 2,841,221

Collatz Trajectory (99 steps to reach 1)

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

2,841,221 8,523,664 4,261,832 2,130,916 1,065,458 532,729 1,598,188 799,094 399,547 1,198,642 599,321 1,797,964 898,982 449,491 1,348,474 674,237 2,022,712 1,011,356 505,678 252,839 758,518 379,259 1,137,778 568,889 1,706,668 853,334 426,667 1,280,002 640,001 1,920,004 960,002 480,001 1,440,004 720,002 360,001 1,080,004 540,002 270,001 810,004 405,002 202,501 607,504 303,752 151,876 75,938 37,969 113,908 56,954 28,477 85,432 42,716 21,358 10,679 32,038 16,019 48,058 24,029 72,088 36,044 18,022

More profiles

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