λ
Sequence Observatory

5,123,611

47 × 109013
Deficient Odd Composite

Starting at 5,123,611, the Collatz iteration reaches 1 after 144 steps. The first transition is 15370834; the starting value is odd with 4 positive divisors.

Prime Factor Structure

Factorization String 47 × 109013
Distinct Prime Factors 2
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 4
Divisor Sum (σ) 5,232,672
Proper Divisor Sum 109,061
Digit Sum / Digital Root 19 (Root: 1)
Adjacent Primes #5123603 ← → #5123621

Radix Representation

Decimal 5123611
Binary 10011100010111000011011 (23 bits)
Octal 0o23427033
Hexadecimal 0x4E2E1B

Divisor Catalog (4)

1 47 109,013 5,123,611

Collatz Trajectory (144 steps to reach 1)

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

5,123,611 15,370,834 7,685,417 23,056,252 11,528,126 5,764,063 17,292,190 8,646,095 25,938,286 12,969,143 38,907,430 19,453,715 58,361,146 29,180,573 87,541,720 43,770,860 21,885,430 10,942,715 32,828,146 16,414,073 49,242,220 24,621,110 12,310,555 36,931,666 18,465,833 55,397,500 27,698,750 13,849,375 41,548,126 20,774,063 62,322,190 31,161,095 93,483,286 46,741,643 140,224,930 70,112,465 210,337,396 105,168,698 52,584,349 157,753,048 78,876,524 39,438,262 19,719,131 59,157,394 29,578,697 88,736,092 44,368,046 22,184,023 66,552,070 33,276,035 99,828,106 49,914,053 149,742,160 74,871,080 37,435,540 18,717,770 9,358,885 28,076,656 14,038,328 7,019,164

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