λ
Sequence Observatory

4,221,419

4221419
Deficient Odd Prime

Starting at 4,221,419, the Collatz iteration reaches 1 after 105 steps. The first transition is 12664258; the starting value is odd with 2 positive divisors.

Prime Factor Structure

Factorization String 4221419
Distinct Prime Factors 1
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 2
Divisor Sum (σ) 4,221,420
Proper Divisor Sum 1
Digit Sum / Digital Root 23 (Root: 5)
Adjacent Primes #4221409 ← → #4221421

Radix Representation

Decimal 4221419
Binary 10000000110100111101011 (23 bits)
Octal 0o20064753
Hexadecimal 0x4069EB

Divisor Catalog (2)

Collatz Trajectory (105 steps to reach 1)

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

4,221,419 12,664,258 6,332,129 18,996,388 9,498,194 4,749,097 14,247,292 7,123,646 3,561,823 10,685,470 5,342,735 16,028,206 8,014,103 24,042,310 12,021,155 36,063,466 18,031,733 54,095,200 27,047,600 13,523,800 6,761,900 3,380,950 1,690,475 5,071,426 2,535,713 7,607,140 3,803,570 1,901,785 5,705,356 2,852,678 1,426,339 4,279,018 2,139,509 6,418,528 3,209,264 1,604,632 802,316 401,158 200,579 601,738 300,869 902,608 451,304 225,652 112,826 56,413 169,240 84,620 42,310 21,155 63,466 31,733 95,200 47,600 23,800 11,900 5,950 2,975 8,926 4,463

More profiles

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